The annoyance of a poorly chosen exhaust on an MX5 is something familiar to many drivers. Cheap setups often rattle or produce a harsh sound that doesn’t match the car’s sporty character. The best mx5 exhaust offers a balance of sound and performance that feels right without making the daily drive uncomfortable.
A quality MX5 exhaust usually hinges on a few key points. Stainless steel or titanium construction helps resist corrosion and lasts for years, especially in wet climates.
Fitment is critical since a custom or ill-fitting pipe can cause leaks or require frequent adjustments. Lastly, diameter and design influence power output and sound, with most effective systems hitting around 2.25 to 2.5 inches in diameter to maintain proper flow and engine breathing without losing torque.
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| Image | Product | Price |
|---|---|---|
Our Top Picks 1 ![]() | Borla Axle-Back MX5 | Check Price |
Our Top Picks 2 ![]() | MBRP Race Profile MX5 | Check Price |
Our Top Picks 3 ![]() | Tomei Titanium Muffler NC | Check Price |
Our Selected Top 12 Mx5 Exhaust Worth Your Money
This list includes a variety of exhaust systems designed for different driving styles and setups. Each option is reviewed based on sound, installation process, durability, and fit, helping readers find a system that matches their budget and performance needs while highlighting practical pros and cons.
1. BORLA 11919 Axle-Back Exhaust System for Mazda MX5 Miata
This is a Borla axle-back exhaust system made for the Mazda MX5 Miata. It fits well for drivers wanting a solid upgrade to their car’s sound and durability without complex installation. Its biggest strength is the quality construction that keeps the OE fit but improves exhaust tone and lifespan.
Installation is straightforward since this exhaust is bolt-on and designed specifically for the MX5. It feels like a precise fit from the start, so you won’t need to modify anything. The welded T-304 stainless steel holds up well against the elements, and daily use produces no vibration or rattling.
Maintenance mostly involves occasional cleaning to keep the painted exterior from fading.
The exhaust does a good job balancing sound and refinement. It adds a deeper rumble without creating drone during cruising. The build is solid; the entire piece is all welded and shows no weak points in construction.
The strongest praise is for its durability and sound quality. One complaint mentions the painted finish may chip over time in harsh conditions.
This Borla axle-back exhaust system fits the Mazda MX5 Miata and is built from T-304 stainless steel, which resists rust and holds up well over time. Installation is a bolt-on process that requires no welding, making it accessible for basic garage work. It provides a noticeable deep tone without the drone inside the cabin, but some find the sound a.
Drivers looking for a solid upgrade to their MX5’s exhaust sound will appreciate this system’s clear and aggressive note. Those who prefer a quiet, stock feel might want to look at quieter aftermarket options. Also, anyone aiming for a full cat-back setup rather than axle-back should consider other products since this only replaces the rear section.
Cleaning this exhaust is straightforward since the stainless steel surface doesn’t discolor easily, even after exposure to heat and road grime. The welded construction feels sturdy and makes the system durable enough to last without frequent adjustments. It takes up about the same space as the stock muffler, so storage under the vehicle isn’t affected.
Pros
- Fits Mazda MX5 Miata precisely without modifications
- Durable stainless steel resists corrosion
- Balanced exhaust note with no cruising drone
- Simple bolt-on installation
Cons
- Painted finish can chip under tough conditions
- Relies on color finish rather than polished steel look
| Specification | Details |
|---|---|
| Material | T-304 Stainless Steel |
| Installation | Bolt On |
| Weight | 26 pounds |
| Exterior Finish | Painted |
| Assembly | All Welded Construction |
| Model Number | 11919 |
2. MBRP Race Profile Axle-Back Exhaust for Mazda MX-5 Miata
This is an axle-back exhaust made for the Mazda MX-5 Miata, aimed at drivers who want a clear racing sound and improved flow without a full system swap. Its biggest strength is the noticeable flow improvement, making it a good fit for someone focused on performance gains alongside a sportier exhaust note.
Installation comes down to a direct bolt-on design, which means no cutting or welding is needed. The 2.5-inch tubing fits the MX-5’s rear section snugly and aligns with the factory mounting points.
Using it daily means dealing with a louder, race-style sound that carries well, but without being overwhelmingly noisy. Cleaning is straightforward since the visible parts are accessible and made of durable materials that handle road grime and heat without much fuss.
The exhaust improves flow by around 43 percent, helping the engine breathe better, which is evident in the sharper sound and slight power feel. The build quality feels solid and ready for heat exposure typical in racing setups. The most common complaint is the single rear exit may not appeal to those wanting a dual-exit look, and some find the race profile a bit too loud for quiet neighborhood drives.
The clamp and bolt connections hold well through vibrations.
This axle-back exhaust fits directly onto the Mazda MX-5 Miata with a 2.5-inch tubing size. The race profile boosts exhaust flow by about 43%, which can help improve engine response. Installation involves unbolting the old exhaust and bolting this one on, a process that can take about an hour with basic tools.
The exhaust is well suited for those wanting an aggressive sound and better airflow without changing the full exhaust system. It fits directly, so no cutting or welding is needed. Drivers focusing on performance gains and a louder, more aggressive tone will appreciate this. Those who prefer a quieter ride or street-legal mufflers with less drone might want to consider.
This exhaust holds up well under normal weather, and cleaning requires wiping down the stainless steel parts. It hangs securely and doesn’t rattle even on bumpy roads. One downside is that the single exit could look less flashy compared to dual-exit designs, but it matches the lightweight character of the MX-5. Storage is straightforward due to the compact size.
Pros
- Easy direct bolt-on installation
- Noticeable 43% improvement in exhaust flow
- Durable tubing suitable for race conditions
- Clear race profile sound without extra modifications
Cons
- Single exit design limits visual appeal
- Race sound can be too loud on regular roads
| Specification | Details |
|---|---|
| Exhaust Type | Axle-Back |
| Tubing Size | 2.5-Inch |
| Exhaust Profile | Race |
| Exhaust Exit | Single Rear |
| Flow Improvement | 43% Increase |
| Installation | Direct Bolt-On |
3. Tomei Titanium Muffler Kit for Mazda MX-5 Miata NC
This is a titanium muffler kit designed specifically for the Mazda MX-5 Miata NC with the LF-VE engine. It suits someone who values reducing weight on their car and improving exhaust flow. Its biggest strength lies in shedding over 20 pounds compared to the stock exhaust, which is a serious gain for handling and performance.
Installing this muffler involves swapping out the original unit, and the lightweight titanium material makes handling it easier during the process. Daily use means dealing with a system that resists corrosion better than steel, so it stays cleaner over time.
The burnt titanium tip adds some visual interest without affecting fitment, which remains precise for this model. Maintenance is simpler since titanium doesn’t rust like conventional mufflers.
The muffler improves engine response thanks to its straight-through, high-flow design. The build quality stands out for being lightweight and durable with full titanium construction. Common praise focuses on the sharp, sporty sound it creates without being overly loud.
The main complaint involves the high price, reflecting the premium materials. Another note is that the blue-gradient tip might fade a bit after long exposure.
This Tomei Titanium Muffler Kit stands out for its lightweight and durable titanium construction. Weighing only 5.3 pounds, it cuts down the weight considerably compared to the original 26.9-pound exhaust system. Its straight-through design improves exhaust flow, resulting in a noticeable boost in throttle response and a sharper exhaust sound. Some mention the price is higher than typical mufflers.
This muffler fits the Mazda MX-5 Miata NC models with the LF-VE engine, which means anyone driving that specific version can expect a direct fit without modification. It suits those wanting a lighter setup that helps reduce overall car weight and improve driving dynamics. Those who want a quieter or more subtle exhaust might want to consider other options.
People interested in performance upgrades that include shedding weight and getting a louder, racing-inspired sound will find this kit satisfying. The titanium tip with a blue-gradient finish adds a touch of style. For everyday street drivers caring more about comfort and sound volume, a standard or less pricey muffler might be a better choice.
Pros
- Significant weight reduction improves handling
- Highly resistant to corrosion over time
- Boosts exhaust flow and engine responsiveness
- Distinctive burnt titanium tip with logo
Cons
- Premium price compared to standard mufflers
- Tip color fades with prolonged exposure
| Specification | Details |
|---|---|
| Material | Full Titanium |
| Weight Reduction | 21.6 lb (5.3 lbs vs. OEM 26.9 lbs) |
| Fitment | Mazda MX-5 Miata NC with LF-VE engine |
| Tip Diameter | 89.1 mm Burnt Titanium |
| Design | Straight-through High-Flow Racing |
| Warranty | 1 Year Manufacturer |
4. XITER Steel Exhaust Tips for Mazda MX-5 Miata 2016-2026
The XITER Steel Exhaust Tips fit the Mazda MX-5 Miata models from 2016 to 2026. This product works well for anyone wanting a quick and stylish upgrade to the car’s rear without modifying the actual exhaust system. Its main strength lies in the easy clamp-on installation that avoids extra work like welding.
Setting these up takes just a few minutes since the tips clamp around the existing pipes. You only need a screwdriver to tighten the screws, and the fit feels secure right away.
Using them daily does not require any adjustments, and they help keep the original exhaust from getting scratched. The different finishes let you choose a look that fits your style.
The steel build holds up well to heat and resists rust over time. The main praise is for the solid fit that stays in place on most roads. A noted downside is that the clamp might slip if the exhaust pipe shape isn’t a good match or if mounted loosely.
The safest bet is to measure your pipe size precisely before ordering.
These exhaust tips fit the Mazda MX-5 Miata models from 2016 to 2026. The stainless steel holds up well against heat and corrosion, lasting through daily drives without noticeable wear. Most people find the clamp-on installation simple and quick, although some note the fit can be a bit snug depending on the exhaust pipe size.
Drivers wanting a straightforward way to upgrade their Miata’s rear appearance with minimal fuss will find these tips practical. The black, burnt blue, or chrome finishes bring a sporty touch that doesn’t require welding or drilling. Those looking for a perfect custom fit might prefer a model with exact measurements or weld-on options instead.
The six-month warranty is a fair period for testing durability, especially since this product directly faces high temperatures and weather. Cleaning the tips involves just metal polish and occasional wiping to keep the finish bright. The package comes with two tips, fitting standard dual-exhaust setups without extra parts.
Pros
- Clamp-on design needs no welding
- Durable stainless steel resists rust
- Multiple finishes for personal style
- Protects original exhaust from scratches
Cons
- Clamp can slip on non-standard pipes
- Warranty only covers six months
| Specification | Details |
|---|---|
| Compatible Models | Mazda MX-5 Miata 2016-2026 |
| Material | Premium stainless steel |
| Installation | Clamp-on, no welding or drilling |
| Finish Options | Burnt blue, black, silver chrome |
| Warranty | Six-month manufacturer warranty |
5. Catback Exhaust Muffler System for Mazda Miata MX-5 1989-1993
This catback exhaust muffler system fits the Mazda Miata MX-5 models from 1989 to 1993. It suits anyone looking for a straightforward replacement that won’t need extra modifications.
Its biggest strength is the direct bolt-on fit, which makes installation much simpler compared to other exhaust systems.
Setting up the muffler system requires no custom work since all mounting points match factory specs. The included bolts and gaskets cover everything you need, saving time hunting for parts.
Daily driving shows the stainless steel holds up well against rust, though cleaning can get tricky in tight spots around the welded joints. The kit stays firmly in place, and it fits under the car without rubbing or hanging low.
The exhaust delivers a solid, clear tone when accelerating without feeling too loud or annoying. The TIG/MIG welded construction gives the pipe good strength, helping it resist cracks over time.
Strengths reported include the smooth fit and strong build quality, while some mention that the sound could be quieter at idle. The 60-day warranty applies to protect against early defects, which adds a bit of reassurance.
The Catback Exhaust Muffler System for the Mazda Miata MX-5 1989-1993 offers a straightforward bolt-on installation, which is convenient for those wanting a quick upgrade without custom work. It’s made from stainless steel and comes with all the needed hardware, including bolts and gaskets. Some found the welds and fitment less consistent than expected, resulting in occasional noise issues or.
This system works well for drivers focused on improving their exhaust sound and appearance with a durable setup that won’t need extra modifications. Those looking for a quieter ride or more specific performance tuning might find it lacking in refinement or power gains. It suits drivers who want a simpler setup without spending much on a full custom system.
The included 60-day warranty offers some reassurance during the initial break-in and inspection. Installation hardware being part of the package saves time and extra purchases. Keep in mind that the muffler’s sound can be louder than stock, which some enjoy but others may find too harsh for daily commuting or long highway drives.
Pros
- Direct bolt-on fit with no modifications needed
- Includes all necessary bolts and gaskets
- Made from durable stainless steel
- TIG/MIG welded for strong construction
Cons
- Sound could be quieter at idle
- Cleaning tight welded areas is challenging
| Specification | Details |
|---|---|
| Material | Stainless Steel |
| Fitment | Direct bolt-on for 1989-1993 Mazda Miata MX-5 |
| Included Components | BOLTS, GASKETS, MUFFLER |
| Manufacturer Warranty | 60 DAYS |
| Manufacturer Part Number | CB-MMX590 |
6. MagnaFlow Cat-Back Exhaust System 16668
This MagnaFlow Cat-Back Exhaust System suits MX5 drivers focused on solid sound and increased engine power. Its biggest asset is the resonant, throaty tone that stands out without being overbearing.
This model fits well for those who want a noticeable but controlled exhaust note and better flow.
Setting this up involves straightforward installation thanks to the direct-fit design and included hardware. The 3D scanning during development means it aligns well with the factory mounting points, which helps avoid custom adjustments. Daily use shows it delivers a consistent sound that’s richer inside and out, without harsh drone when cruising at steady speeds.
The system’s main job of improving exhaust flow and power is backed by dyno testing. Stainless steel construction holds up well to corrosion and looks good with its brushed finish. Reports highlight the solid build and clear audio improvements.
One drawback is the weight at 45 pounds, making handling during installation a bit cumbersome for one person.
The MagnaFlow Cat-Back Exhaust System 16668 delivers a deep, throaty sound that stands out inside and outside the vehicle. This system improves engine performance through better exhaust flow, as confirmed by dyno testing. Installation fits well thanks to precise 3D scanning. The main drawback is that the sound level may be louder than some expect, which could be an issue.
This exhaust system suits drivers who want stronger engine sound and slightly enhanced power in their MX5. It works best for those who do not mind the increased noise and prefer a solid, durable stainless steel setup. Drivers seeking a quieter or more subtle exhaust note should consider alternative systems with more moderate sound levels.
People who enjoy weekend drives and want to hear their engine’s growl will be satisfied with this system’s clear, aggressive tone. Since it comes with all installation hardware and fits tightly, hobbyists who like DIY projects will appreciate it. Those who want an exhaust mainly for looks or a mild sound upgrade might find this setup too loud or pronounced.
Pros
- Strong, throaty exhaust sound
- Improves engine power via better flow
- Fits MX5 with minimal modifications
- Durable stainless steel builds lasting quality
Cons
- System weight feels heavy for solo install
- Sound might be loud for very quiet driving
| Specification | Details |
|---|---|
| Model | Street Series 16668 |
| Material | Stainless steel (corrosion-resistant) |
| Weight | 45 pounds |
| Dimensions | 49 x 14.13 x 24.75 inches |
| OEM Part Number | 16668 |
| Manufacturing | Made in the USA |
7. Turbo Manifold for 1990-1993 Mazda Miata MX-5 NA B6 Engine
This turbo manifold fits 1990-1993 Mazda Miata MX-5 NA models with the 1.6L B6 engine. It suits drivers looking to add a turbocharger without altering the factory setup. Its biggest strength is the direct bolt-on design that requires no modifications for installation.
Installing this manifold is straightforward because it comes with all necessary gaskets and bolts. The direct fit means you don’t have to adjust your car’s frame or parts to make it work.
Daily use shows it handles heat well, so reliability is solid even under higher boost. Cleaning is typical for cast iron parts, which may accumulate rust if exposed to moisture over time.
Made from premium-grade iron, the manifold handles extreme heat and boost pressures, matching various turbo styles like T3 and GT35. The main benefit is improved exhaust flow, which boosts horsepower and throttle response noticeably. Some reports highlight the quality of materials, but the lack of included instructions can make installation tricky without prior experience.
The turbo manifold fits the 1990-1993 Mazda Miata MX-5 NA with a 1.6L B6 engine without any need for modifications. It comes with all necessary hardware for installation, making the process straightforward for anyone with basic mechanical skills. The cast iron material handles heat well, but some find it heavy and slightly challenging to fit in tight engine bays.
This product suits those who want to upgrade their Miata for better performance, especially with turbochargers like the T3 or GT35. It’s a good choice for people comfortable with mechanical work and looking to increase horsepower and throttle response. People wanting a lighter or simpler exhaust system might prefer investing in aftermarket options specifically designed for weight savings.
Anyone looking to boost power and willing to spend time on installation will appreciate this part. It’s built for durability and performance, which works well over long drives and spirited driving sessions. However, those new to engine modifications or who want a plug-and-play option with minimal hassle might find this a bit complex to handle without professional help.
Pros
- Direct bolt-on design, no modifications needed
- Includes all gaskets and bolts for install
- Handles high boost and heat reliably
- Works with multiple turbocharger models
Cons
- No installation instructions included
- Cast iron can rust without proper care
| Specification | Details |
|---|---|
| Fitment | 1990-1993 Mazda Miata MX-5 NA 1.6L B6 engine |
| Material | Cast premium-grade iron |
| Weight | 10.5 pounds |
| Compatible Turbos | T3, T3/T4, T4, T70, GT35 |
| Package Size | 16 x 6 x 4 inches |
8. Walker 75514 Exhaust Resonator and Pipe Assembly for Mazda MX-5
This is an exhaust resonator and pipe assembly designed for the Mazda MX-5. It suits someone who wants to replace or repair their original exhaust parts without changing the factory sound. Its biggest strength is the easy installation thanks to parts that match the original equipment exactly.
Setting this up doesn’t require modifications because the pipe routing and hardware follow the factory design closely. The aluminized steel construction makes it durable against damage from road debris. Daily driving feels normal with this part in place since it keeps the exhaust noise at the level you expect from the factory system.
The resonator assembly performs well in reducing noise while lasting through normal wear and tear. It uses thick flanges, brackets, and hardware that hold up over time. One strong point noted is the fit and sound that feels close to original.
A common note is just that the part matches the factory sound without adding performance gains.
This exhaust resonator and pipe assembly fits the Mazda MX-5 closely, matching the original system’s dimensions and sound. Installation goes quickly due to precise pipe routing and hardware that mirrors the factory design. Some find it a bit tricky to line up the brackets perfectly during setup, but the steel construction feels sturdy and durable, resisting wear well over time.
Drivers who want to keep their Mazda MX-5 sounding close to stock while replacing worn or damaged parts will appreciate this resonator assembly. Those seeking a more aggressive exhaust tone or a custom setup might want to explore different options designed to change the sound profile. This part aims to restore rather than modify performance or noise levels.
The aluminized steel material helps protect against rust and corrosion, a bonus if you drive in wet or salty environments. Maintenance is straightforward since the pipe and resonator can be inspected visually through common engine bay checks. It’s a practical replacement that fits cleanly without extensive modification or special tools.
Pros
- Matches factory fit and hardware exactly
- Durable steel construction resists road damage
- Maintains factory sound level with louvered tubes
- Easy to install without special tools
Cons
- Does not improve exhaust performance or sound
- Only one piece included, no additional parts
| Specification | Details |
|---|---|
| Brand Name | Walker |
| Model Number | 75514 |
| Material | Aluminized steel |
| Included Components | One Exhaust Resonator and Pipe Assembly |
| Manufacturer Part Number | 75514 |
| Number of Items | 1 |
9. Mazda MX-5 Exhaust Muffler Tip Stainless Steel
This stainless steel exhaust tip fits Mazda MX-5 models and suits drivers who want to protect and personalize their exhaust pipe without complex installation. Its main strength is durability combined with a polished look that resists weather issues.
Installing the tip requires no drilling or welding, which makes setting it up straightforward. The fit is stable enough to avoid falling off easily.
Cleaning it about once a month helps keep the mirror-polished surface shiny and free from grime. The product offers several color options, making it easy to match your car’s style.
The exhaust tip maintains the shape of the original pipe well and protects it from damage caused by sun and rain. Its thick inner wall adds some weight and style. Some feedback mentions that while it holds up, the fit isn’t perfect for every exhaust shape and may require adjustments to fit snugly.
The stainless steel shines but can show spots if not cleaned regularly.
This Mazda MX-5 exhaust muffler tip is made of stainless steel with a mirror polish that resists falling off or deforming, even when exposed to sun and rain. It requires simple installation without welding or drilling, fitting right over the existing exhaust pipe. Some mention that the finish can dull after some use, but monthly cleaning helps maintain its shine.
This product fits well for those who want to protect their car’s original exhaust and add a bit of style without complex installation. It holds up against weather and matches various MX-5 models that have similar tip dimensions. People looking for a performance boost or stronger sounds should consider aftermarket exhaust systems instead.
This exhaust tip works best as a reliable visual upgrade that also shields the exhaust from damage. It’s a practical choice for drivers focusing on appearance and protection rather than power gains. Those who prefer brighter colors or a more customized look may find better options elsewhere. Maintenance involves routine cleaning to keep its polished surface looking fresh.
Pros
- Mirror-polished stainless steel resists weather damage
- Simple installation without extra tools
- Protects exhaust pipe from deformation
- Available in multiple colors for customization
Cons
- Fit may require adjustment for some exhaust pipes
- Needs regular cleaning to avoid spotting
| Specification | Details |
|---|---|
| Material | Stainless steel mirror polished |
| Installation | No drilling or welding required |
| Manufacturer Part Number | 6963166958568 |
| Best Sellers Rank | #4,567 in Automotive Replacement Exhaust Pipes |
| ASIN | B0DXP9SC7CC |
10. MZS Exhaust Muffler Titanium Burnt 2 Inlet 3 Outlet
This is a titanium burnt exhaust muffler designed for MX5 and similar vehicles with a 2 inlet. It suits someone who wants a deeper sound from their exhaust without sacrificing performance or dealing with heavy rust issues.
The biggest strength is its sound quality combined with durable materials.
Setting it up requires checking your vehicle’s inlet size because it has a 2 inlet and 15 length. It fits well in most sedan or SUV setups matching those specs. The muffler’s straight-through design helps keep exhaust flowing smoothly while the sound-absorbing cotton keeps noise under control but adds that deep growl you want.
Maintenance mainly involves cleaning the polished stainless steel tip to keep its look.
The titanium burnt tip adds a distinct look to the car’s rear. This muffler handles exhaust flow efficiently, lowering back pressure and improving performance slightly.
It is made from double-layer T-304 stainless steel, so it resists rust and cracks well. Most praise goes to the deep sound tone it creates, but some note that fitment can be tricky if the inlet diameter is off. The burnished tip stays vibrant but might need polishing to keep its shine.
The MZS Exhaust Muffler features a 2-inch inlet and 3-inch outlet, measuring 15 inches long. It uses high-quality sound-absorbing cotton inside, which helps reduce unwanted noise while offering a deep, resonant tone. The stainless steel material holds up well against heat and corrosion. Some find the size a bit bulky for smaller cars, making fitment tricky without careful measuring.
This muffler suits drivers who want a noticeable exhaust sound without extra back pressure affecting engine power. It works better on larger cars or trucks with compatible pipe diameters. People seeking a simple upgrade to improve exhaust flow along with sound control will find this useful. Those needing a compact or quieter option might want to explore other models.
The burnt blue tip adds a distinctive look to the exhaust end, standing out from standard mufflers. Installation requires checking exact inlet size to avoid misfit since it’s a universal but not adjustable part. Maintenance is straightforward thanks to the stainless steel’s durability, though the sound cotton might compact over time and require replacement for best results.
Pros
- Deep, rich exhaust tone
- Durable stainless steel construction
- Reduces exhaust back pressure
- Distinct burnt blue tip look
Cons
- Requires exact inlet size for proper fit
- Burnt tip needs occasional polishing
| Specification | Details |
|---|---|
| Inlet Diameter | 2″ |
| Outlet Diameter | 3″ |
| Length | 15″ |
| Material | Double-layer T-304 polished stainless steel |
| Design | Straight through with sound absorbing cotton |
11. Borla 140085 Cat-Back Exhaust System
This cat-back exhaust system suits anyone wanting a solid power boost and cleaner emissions for their MX5. Its standout feature is the efficient increase in horsepower paired with improved fuel economy, making it a practical upgrade for spirited daily driving.
Installation takes just a couple of hours with basic tools and fits well onto the MX5 without much fuss. The system’s design helps reduce emissions and maintains a steady flow, which keeps fuel consumption lean. Handling daily drives, it feels balanced, neither too loud nor too quiet, offering a satisfying engine sound without being intrusive.
The build quality is sturdy and engineered to optimize power output while cutting down on exhaust pollutants. Most praise goes to the noticeable horsepower gain and fuel savings.
The main complaint involves occasional rattling noises reported at certain RPMs, which might need extra attention during installation for a tight fit.
The Borla 140085 Cat-Back Exhaust System delivers noticeable horsepower gains and improves fuel economy. Installation is straightforward and can be done without special tools in a garage setting. The sound is aggressive without being overwhelming, fitting for street use as well as spirited driving. Some report minor issues with fitment on certain MX5 model years, requiring slight adjustments.
Drivers looking to add power and a deeper exhaust note to their MX5 will appreciate this system. It suits those who want better engine breathing and a sportier sound without excess drone during cruising. Those after a quieter ride or requiring an exact OEM fit might want to consider other options, as the Borla’s loudness and fit can be a.
Regular use shows the exhaust holds up well against road conditions and weather. Cleaning is simple since the stainless steel resists rust and discoloration. The system weighs less than factory components, which can slightly improve handling and acceleration. Some users mention needing extra clamps or modifications during installation for a perfect seal.
Pros
- Easy installation with basic tools
- Improves horsepower efficiently
- Notably better fuel economy
- Emissions reduction integrated
Cons
- Occasional rattling noise reported
- Some may find finish lacking
| Specification | Details |
|---|---|
| Brand Name | Borla |
| Model Number | 40085 |
| Type | Muffler |
| Included Components | Muffler |
| UPC | 808422400855 |
12. Walker Quiet-Flow SS 55207 Exhaust Muffler for Mazda Miata
This exhaust muffler fits several early Mazda Miata models, making it a solid choice for anyone restoring or maintaining one. It stands out for lasting much longer than typical mufflers thanks to its stainless steel build, which keeps rust and damage far at bay.
Installation is straightforward since it comes with original factory-style hangers and brackets, meaning no welding or custom fitting is needed. The built-in internal drainage system also helps reduce moisture buildup, which is a common cause of muffler failure in humid or wet conditions.
The muffler delivers a quiet ride with factory-style sound, controlling noise well without sacrificing flow. Its internal structure minimizes distortion from heat changes, adding to durability.
Some users noticed that while the muffler lasts longer, it may not dramatically change the car’s sound or performance beyond OEM levels.
This Walker Quiet-Flow muffler fits several Mazda Miata models and is praised for its stainless-steel construction that resists rust better than aluminized mufflers. The OE-style hangers make installation straightforward, avoiding welding or extra fabrication. Some mention it does not dramatically change the exhaust sound, which suits people wanting a factory-like noise level but may disappoint those seeking a sporty growl.
People who want a quiet, reliable replacement muffler that lasts longer than standard models will appreciate this part. It works well for daily drivers aiming to keep an original-like exhaust tone. This isn’t the best choice for anyone aiming for a louder or deeper exhaust note, as the sound control features prioritize noise reduction over performance sound.
The internal design helps prevent distortion from heat and moisture, which could extend the life of the muffler. Its sound and flow have been tested to match original equipment standards, making it a practical option for maintaining the car’s intended feel. Still, those building a performance exhaust system should look for options that focus more on sound output than on.
Pros
- Stainless steel prevents corrosion over time
- Easy installation with OE-style mounting parts
- Keeps noise close to factory levels
- Internal drainage reduces moisture buildup
Cons
- Mostly maintains original sound, not louder
- Limited to specific early Miata model years
| Specification | Details |
|---|---|
| Fitment | 1990-1993, 1996-1997 Mazda Miata |
| Material | 100% stainless steel |
| Installation | Direct-fit bolt-on with OE-style hangers |
| Acoustic Control | OE-style louvered tubes and domed heads |
| Warranty | Limited lifetime |
Comparison of Best MX5 Exhausts Reviewed
| Product | Material | Installation | Weight | Sound/Performance |
|---|---|---|---|---|
| Borla Axle-Back MX5 | T-304 Stainless Steel | Bolt On | 26 pounds | No Drone Guarantee |
| MBRP Race Profile MX5 | – | Direct Bolt-On | – | 43% Flow Increase |
| Tomei Titanium Muffler NC | Titanium | – | 5.3 lbs | High-Flow Racing Design |
| XITER Steel Tips MX5 2016-26 | Stainless Steel | Clamp-On | – | Sporty Appearance |
| Catback Muffler Miata NA | Stainless Steel | Direct bolt-on | – | – |
| MagnaFlow Cat-Back 16668 | Stainless Steel | – | 45 pounds | Magnaflow Sound |
| Turbo Manifold Miata NA B6 | Premium-Grade Iron | Bolt-On | 10.5 pounds | Performance Upgrade |
| Walker 75514 Resonator Pipe | Aluminized Steel | Easy Install | – | Factory Sound |
| Mazda Stainless Steel Tip | Stainless Steel | – | – | Protection and Style |
| MZS Titanium Burnt Muffler | T-304 Stainless Steel | – | – | Deep Tone Muffler |
| Borla Cat-Back 140085 | – | Easy Installation | – | Fuel Economy Boost |
| Walker Quiet-Flow 55207 | Stainless Steel | Bolt-On | – | Long Life Muffler |
- MaterialT-304 Stainless Steel
- InstallationBolt On
- Weight26 pounds
- Sound/PerformanceNo Drone Guarantee
- Material–
- InstallationDirect Bolt-On
- Weight–
- Sound/Performance43% Flow Increase
- MaterialTitanium
- Installation–
- Weight5.3 lbs
- Sound/PerformanceHigh-Flow Racing Design
- MaterialStainless Steel
- InstallationClamp-On
- Weight–
- Sound/PerformanceSporty Appearance
- MaterialStainless Steel
- InstallationDirect bolt-on
- Weight–
- Sound/Performance–
- MaterialStainless Steel
- Installation–
- Weight45 pounds
- Sound/PerformanceMagnaflow Sound
- MaterialPremium-Grade Iron
- InstallationBolt-On
- Weight10.5 pounds
- Sound/PerformancePerformance Upgrade
- MaterialAluminized Steel
- InstallationEasy Install
- Weight–
- Sound/PerformanceFactory Sound
- MaterialStainless Steel
- Installation–
- Weight–
- Sound/PerformanceProtection and Style
- MaterialT-304 Stainless Steel
- Installation–
- Weight–
- Sound/PerformanceDeep Tone Muffler
- Material–
- InstallationEasy Installation
- Weight–
- Sound/PerformanceFuel Economy Boost
- MaterialStainless Steel
- InstallationBolt-On
- Weight–
- Sound/PerformanceLong Life Muffler
How to Choose the Right MX5 Exhaust System
Choosing an exhaust system for the MX5 means balancing sound, performance, and fit. Picking the right materials and design helps avoid frequent replacements and ensures smoother installation. Paying attention to these details saves money and keeps the car running well without extra hassle.
Fit and Compatibility
Exhaust systems meant for an earlier MX5 model can end up causing headaches during fitting. Mounting points often shift slightly between model years and trims, leading to misaligned brackets or forced modifications.
Pushing an exhaust into place usually results in leaks or rattles later on, which nobody wants. On the other hand, a system designed specifically for the exact year and trim tends to drop right in, saving hours on the driveway and avoiding the need for welding or custom brackets.
Clearance under the car and around the bumper is another detail that separates a simple install from a constant worry. Some systems sit too close to heat-sensitive parts or ground obstacles, causing damage or unwanted noise. Checking measurements like pipe diameter and muffler length before buying helps keep everything tidy underneath.
Look for exhausts that show compatibility with the MX5’s stock ride height and rear overhang, so you don’t have to guess or trim anything yourself.
Sound and Noise Level
Running a sports car with an exhaust that’s too loud can quickly turn driving into a series of police stops or complaints from neighbors. On the other hand, a system that’s barely audible takes away from the driving excitement.
The ideal balance usually lies in a moderate setup that offers a noticeable growl under acceleration but isn’t obnoxious during cruising. Many setups list a decibel rating around 85-95 dB at wide-open throttle, which tends to keep things engaging yet manageable.
Material and design play big roles in shaping the sound. Stainless steel is common for lasting tone without rusting, while titanium systems can sharpen the note and reduce weight. The number and size of chambers or resonators also affect noise quality, a setup with a mid-sized resonator (about 2.5 inches in diameter) smooths out harshness while keeping some aggressive edge.
Ignoring these details often leads to disappointment: either a drone that tires your ears on long drives or an exhaust that sounds like a tin can. A well-chosen design keeps everyday drives pleasant and spirited.
Material and Build Quality
Many exhausts on older roadsters start showing rust spots after a couple of years, especially if exposed to wet climates or salty roads. Models made from 304 stainless steel tend to resist corrosion better than milder options.
This means fewer ugly stains and less risk of holes developing, which otherwise can cause noise fluctuations and reduce performance. Paying attention to the type of steel, 304 versus 409 stainless steel, can save a lot of hassle down the line.
The quality of the welds also tells a story about how long the exhaust will last. Spotty or uneven weld beads often lead to cracks or leaks under heat cycling.
Good craftsmanship shows smooth, consistent welding without gaps. Beyond durability, the weight of the system makes a difference, too. Lighter designs, sometimes using thinner steel or titanium components, can slightly improve handling thanks to less mass hanging off the rear chassis.
Just be sure the weight reduction doesn’t come at the cost of strength or longevity.
Performance Impact
Swapping out the factory exhaust often reveals increases in horsepower and torque, typically around 5 to 15 horsepower depending on the setup. This difference turns up during acceleration and overtaking, making the car feel livelier without needing to push the engine hard.
A good exhaust system generally improves throttle response noticeably, cutting down on the lag you might feel with the original setup. That sharper response comes from reduced backpressure and better flow, usually achieved with mandrel bends and performance-grade stainless steel pipes.
Fuel efficiency changes are subtle but can go either way. Some kits cause a slight drop in mileage because drivers enjoy using the extra power, while others maintain or even modestly improve efficiency by allowing the engine to breathe more easily.
Pay attention to emissions compliance if street legality matters, since not all options come with necessary certifications. Look for systems labeled with EPA or CARB approval to avoid issues with inspections and fines.
Installation and Maintenance
Installing some systems can take hours, especially if they require custom fitting. Bolt-on designs make life easier by matching standard sizes and mounting points, cutting install time significantly.
Picking a bolt-on system means the chances of leaks or rattles drop. Custom jobs sometimes need extra welding or adapter pieces, which raises complexity and cost. A good product will come with clear instructions and all necessary hardware to avoid extra trips to the store or mechanic.
Daily cleaning and protection against corrosion make a big difference in how long these parts last. Exhausts often face water, salt, and debris, leading to rust and weakening.
Stainless steel parts with a 304-grade or higher rating hold up better for regular street use. Many people underestimate cleaning; wiping the surface down and checking for small rust spots monthly can prevent major issues. Replacement parts should be easy to find if a section gets damaged, so confirming availability beforehand saves headaches later.
How to Choose the Right Exhaust Sound for Your Driving Style
Exhaust systems can change the sound of your MX-5 quite a bit, from subtle rumbles to loud, aggressive roars. Before deciding, consider how often you drive and where. If you spend a lot of time in traffic or residential areas, a quieter exhaust prevents drawing unwanted attention and keeps the experience enjoyable for longer drives.
On the other hand, if you mostly take your MX-5 on open roads or track days, a louder setup can add excitement and feedback.
Think about these factors to match your exhaust sound:
- Daily driving noise level: Lower decibel systems make stop-and-go traffic less tiring.
- Legal restrictions: Check local noise laws to avoid fines or trouble.
- Sound quality: Some exhausts offer deep, smooth tones while others are sharper or raspier, test clips or in-person listen helps here.
- Driving environment: Is your MX-5 mainly for weekend fun or daily use?
Common Installation Challenges and How to Avoid Them
Installing an MX5 exhaust system often requires more than basic tools and some patience. One common issue is dealing with rusted or seized bolts, especially on older models. Strong penetrating oil and a breaker bar can make this process smoother.
Sometimes the exhaust hangers don’t align perfectly with the new system, which means some trimming or adjusting is necessary to prevent rattling noises.
Another tricky part is ensuring the new system mates correctly with the stock downpipe and catalytic converter. Measurements vary slightly between aftermarket parts, so it’s a good idea to test fit everything first before tightening clamps. It’s also important to replace any old gaskets to avoid exhaust leaks.
During setup, do this:
- Use anti-seize on bolts to ease future removal.
- Support the exhaust well to avoid strain on the hangers.
- Check local noise regulations before finalizing.
Maintaining Your MX5 Exhaust for Longevity and Performance
Exhaust systems, especially on sporty cars like the MX5, tend to accumulate rust faster due to their exposure to heat and moisture. Checking the exhaust for rust spots or holes every few months can prevent bigger issues. Using a wire brush to remove surface rust early on can extend the life of the exhaust without needing a full replacement.
Regular cleaning also plays a key role. Dirt and debris can trap moisture around the exhaust pipes, which accelerates corrosion. Washing the undercarriage thoroughly, particularly in winter months where road salt is common, helps reduce buildup. Drying the area after cleaning is just as crucial.
Small leaks often start where the pipes or mufflers connect. Tightening clamps or replacing old gaskets will keep these joints sealed. Sounds from the exhaust that change suddenly, like rattles or hisses, signal that these spots need inspection. Proper maintenance not only keeps the car running well but also preserves the distinct exhaust note MX5 drivers appreciate.
People Also Asked
How Do I Properly Size an Exhaust for My MX5?
Choose an exhaust diameter around 2 to 2.25 inches for most MX5 engines. Smaller sizes can restrict flow and reduce power, while bigger sizes might lower backpressure and hurt low-end torque. Checking what fits under your car without rubbing the suspension or heat shields helps avoid installation problems. Also, consider how much noise you want since bigger pipes tend to be louder.
What Maintenance Is Needed to Keep an MX5 Exhaust in Good Shape?
Keep an MX5 exhaust in good shape by regularly checking for rust and cleaning the pipe surfaces. Washing off road salt and grime helps prevent corrosion, especially in winter. Tighten any loose bolts during inspections to avoid rattling noises. Using a metal polish occasionally keeps the exhaust looking polished and prolongs its life.
Are There Safety Concerns When Installing a New MX5 Exhaust?
Safety concerns exist mainly around proper fitment and secure mounting to avoid exhaust leaks or parts falling off. It helps to measure clearance and tighten all bolts firmly during installation. Taking care during removal of old parts avoids damaging sensors or wiring. Double-check connections and test drive gently to listen for unusual noises before regular use.
How Long Does a Typical MX5 Exhaust Last Under Normal Use?
A typical MX5 exhaust lasts around 5 to 7 years with normal driving. Rust is the main issue, especially in wet or salty climates, so check the system regularly for corrosion. Stainless steel options usually last longer but cost more. Cleaning the exhaust and avoiding short trips can help extend its life.
What Common Problems Should I Watch for with an MX5 Exhaust?
Common problems with an MX5 exhaust include rust and leaks, especially in older models or those driven in humid or salty environments. Pay attention to rattling noises, which may indicate loose hangers or worn mounts. Cleaning the exhaust tip regularly helps prevent buildup from road grime and keeps it looking better over time.
Conclusion
Choosing the best MX5 exhaust comes down to sound quality, fit, and durability. The exhaust should complement your driving style without being too loud for daily use. Proper fit is key to avoid installation issues, and materials like stainless steel usually last longer.
Paying attention to these factors helps avoid frustration and extra costs later on.
Think about where you’ll install it, how much you want to spend, and how often you drive your car. Some options work better for weekend drives while others suit daily use.
Take another look at the comparison table and the detailed picks above to match the right exhaust to your needs and budget.

Hi, I’m Garrett Winslow, a bike enthusiast who enjoys exploring different types of bicycles, from everyday commuter bikes to mountain bikes and road bikes. I love learning about bicycle components, riding accessories, maintenance techniques, and gear that makes cycling more comfortable and enjoyable. Through my writing, I aim to share practical tips and useful insights to help fellow cycling enthusiasts choose the right bikes, maintain their bicycles, and get the most out of every ride.











