2022+ BRZ MRT Sport Touring Axle Back Exhaust

2022+ Subaru BRZ MRT Sport Touring Axle-Back Exhaust System

The Sound the BRZ Should Have Come With: Deep, Sporty, and Daily-Driver Perfect

The second-generation Subaru BRZ (ZD8) is one of the most rewarding sports cars available at any price. Its 2.4L naturally aspirated boxer engine revs freely and rewards precision driving, but the factory exhaust keeps its character almost entirely contained. The MRT Sport Touring Axle-Back gives the BRZ the exhaust note it was always supposed to have: a clean, smooth, deep bass tone that's genuinely sporty without being overwhelming, with subtle pops and bangs that remind you what you're driving every time you work through the gears.

With a loudness rating of 6/10 and a near-imperceptible drone rating of just 1/10, the Sport Touring Axle-Back is purpose-built for the daily-driven BRZ, an OEM-plus upgrade that enriches the driving experience at every rev without making you self-conscious in traffic or fatiguing on highway drives. It also fits the mechanically identical Toyota GR86, making it a natural choice for both platforms.

Built from T304 stainless steel with 2.5-inch mandrel-bent tubing and dual 4-inch tips, backed by a limited lifetime warranty.

Part Number: 91Z154
Application: 2022+ Subaru BRZ (ZD8) / Toyota 86 / Toyota GR86, 2.4L boxer engine Installation Time: Approximately 60 minutes
Warranty: Limited Lifetime
Tip Options: Polished T304 SS | Black Ops Matte Black

The MRT BRZ Sport Touring Axle Back Exhaust is how the BRZ should have sounded from the factory. This performance exhaust replaces the stock mufflers to give your BRZ a healthy note with a clean, smooth tone that is very sporty without being overwhelming. MRT team engineers also packaged the mufflers tight to the rear bumper, providing lots of clearance for when the road gets a bit rough.

If you want to hear a little bit more of the boxer engine at low revs, this MRT exhaust is the right system for you. Designed for the second-generation (ZD8) Subaru BRZ introduced for the 2022 model year, the MRT Sport Touring Axle Back provides an on-demand sound that is great for a daily driving setup. It shines at high RPMs but stays under control on city streets and in crowded neighborhoods. Since the Subaru BRZ is mechanically a twin to the Toyota 86, you can also use this system as a Toyota GR86 axle back exhaust.

Make Your Mark with an MRT Exhaust

MRT handcrafts this Subaru BRZ ZD8 Axle Back in corrosion-resistant T304 stainless steel for improved performance and durability. We use 2.5-inch mandrel-bent exhaust tubing that minimizes restrictions. The dual tip exhaust has standard polished stainless steel four-inch tips with an optional Black Ops black matte tip finish. This system is engineered for the best sound to match your BRZ and provides increased performance from the increased exhaust flow.

An axle back exhaust literally offers great bang for the buck and is easy to install. It takes only 60 minutes using a rachet/socket set and other common tools. Watch our exhaust installation video below - and check out some other videos of the Subaru BRZ/Toyota GR86 Sport Touring Exhaust System while you're at it.

Other Subaru BRZ Exhaust Systems

MRT has multiple BRZ exhaust kits to make your 2+2 fastback coupe bellow like a full-size sports car. If you want a more aggressive sound, the MRT BRZ Street Race Axle Back Exhaust might be a better choice for you. Give us a call at 734-455-5807 if you have questions or are interested in a custom exhaust. Our owner Scott has more than 35 years of automotive engineering experience and continues to be hands-on in developing the best Subaru exhaust systems.

Application: 2022+ Subaru BRZ/Toyota 86/Toyota GR86, 2.4L "boxer" engine

Hear the Difference

• How does it sound? MRT Sport Touring Axle Back provides a refined on-demand sound that is loud when you want it.
• Is there a drone or resonance? The drone is minimal.
• What if I step on it? Wide-open throttle delivers a spirited and fun performance sound.

Are you located close to Plymouth, Michigan and need your MRT aftermarket exhaust installed? Call MRT at 734-455-5807 to make an appointment today!

Key Features and Specifications

Product Highlights

• OEM-Plus Sound Profile: Deep bass tone with subtle pops and bangs, the BRZ's natural character amplified, not replaced
• Near-Zero Drone: 1/10 drone rating, virtually undetectable at highway speeds; true daily-driver comfort
• Also fits Toyota GR86: Direct fitment for the mechanically identical 2022+ Toyota GR86 platform.
• Tight Rear Bumper Packaging: Mufflers positioned close to the bumper for maximum ground clearance
• Dual 4" Polished Tips: T304 stainless with beveled edges; Black Ops matte black option available
• 2.5" Mandrel-Bent Tubing: Precision CNC bends for maximum flow and accurate fitment
• Straight-Through Muffler Design: Reduces restriction for improved exhaust flow and performance
• DIY-Friendly Installation: All hardware included; approximately 60-minute install
• No Tuning Required: Direct bolt-on upgrade
• Free Shipping: Complimentary delivery on all orders

Technical Specifications

• Material: Corrosion-resistant T304 stainless steel throughout
• Tube Diameter: 2.5-inch mandrel-bent
• Tip Size: Dual 4-inch double-wall with beveled edges
• Tip Finish Options: Polished T304 SS or Black Ops matte ceramic black
• Muffler Design: Straight-through for reduced backpressure
• Loudness Rating: 6/10
• Drone Rating: 1/10 (near-zero; virtually undetectable at any speed)
• Performance Rating: 8/10
• Compatibility: 2022+ Subaru BRZ (ZD8) / Toyota 86 / Toyota GR86, 2.4L boxer engine
• Does Not Fit: 2013–2021 Subaru BRZ / Toyota 86 (first generation)

How the Sport Touring Fits Into the MRT BRZ Lineup

MRT offers two axle-back options for the 2022+ Subaru BRZ and Toyota GR86. The Sport Touring Axle-Back (this system, Part #91Z154) is the refined, daily-driver choice, a 6/10 loudness rating with a 1/10 drone rating, tuned for deep bass character and on-demand performance sound without any compromise in everyday comfort.

The MRT BRZ Street Race Axle-Back (Part #91Z153) is the step up for drivers who want a louder, more aggressive, always-present performance sound with more exhaust presence at every throttle level. If you use your BRZ primarily on weekends or at the track and want maximum sound impact, the Street Race is the more aggressive option. If you drive your BRZ every day and want the best balance of character and comfort, the Sport Touring is the right call.

Sound Characteristics

What You Can Expect to Hear

• Idle & Cold Start: Deeper and more present than stock, a refined, sports car tone that's quiet enough for any neighborhood
• City Driving: A smooth, deep bass note that adds genuine character to everyday driving without drawing unwanted attention
• Low Revs (under 3,500 RPM): The boxer engine's deep exhaust character comes through clearly, OEM-plus enrichment at its best
• High Revs (above 3,500 RPM): The exhaust note steps back as induction character takes over, a naturally balanced sound profile that rewards revving
• Acceleration: Subtle pops and bangs through the gears that add satisfaction to every spirited pull
• Highway Cruising: Near-silent; the 1/10 drone rating means the exhaust is virtually undetectable at cruise speeds
• Overall Character: Classic sports car sound, deep, tasteful, and rewarding on demand without ever becoming tiresome

Sound Characteristics

What You Can Expect to Hear

• Idle & Cold Start: Deeper and more present than stock, a refined, sports car tone that's quiet enough for any neighborhood
• City Driving: A smooth, deep bass note that adds genuine character to everyday driving without drawing unwanted attention
• Low Revs (under 3,500 RPM): The boxer engine's deep exhaust character comes through clearly, OEM-plus enrichment at its best
• High Revs (above 3,500 RPM): The exhaust note steps back as induction character takes over, a naturally balanced sound profile that rewards revving
• Acceleration: Subtle pops and bangs through the gears that add satisfaction to every spirited pull
• Highway Cruising: Near-silent; the 1/10 drone rating means the exhaust is virtually undetectable at cruise speeds
• Overall Character: Classic sports car sound, deep, tasteful, and rewarding on demand without ever becoming tiresome

Why Choose the MRT BRZ Sport Touring Axle-Back?

OEM-Plus Sound That Honors the BRZ's Sports Car DNA

The BRZ is a driver's car, precise, balanced, and rewarding to drive hard. The MRT Sport Touring Axle-Back is tuned to complement that character rather than overwhelm it. At low revs and city speeds, the exhaust adds a deep bass presence that gives the boxer engine an authoritative note without being intrusive in traffic or neighborhoods. As the revs climb above 3,500 RPM, the Sport Touring steps back and lets the 2.4L's natural induction character take over, exactly the kind of balanced performance tuning that BRZ owners who've turned off the fake engine sound are searching for.

It shines at high RPMs on backroads and track days. It stays composed and unobtrusive everywhere else. This is the exhaust for BRZ drivers who want their car to sound like the classic sports car it is, not louder for the sake of loudness, but genuinely better at every throttle position.

Near-Zero Drone, Truly Built for Daily Driving

A drone rating of 1/10 is the defining feature of the Sport Touring Axle-Back and the reason it works so well as a daily driver upgrade. Highway cruising is nearly indistinguishable from stock in terms of cabin comfort; the exhaust simply doesn't generate meaningful resonance at steady speeds. The improvement is in character and tone, not constant volume. Cold starts are refined and neighbor-friendly. Long road trips remain relaxed. For BRZ owners who use their car every day and don't want any fatigue alongside their enjoyment, the 1/10 drone rating is as close to a guarantee of daily drivability as an exhaust upgrade can offer.

Muffler Replacement Axle-Back, Real Performance Gains, Fast Install

The Sport Touring Axle-Back replaces the factory mufflers with MRT's straight-through design, improving exhaust gas flow in the rear section of the system and delivering a noticeable boost in throttle response and overall engine performance. The axle-back approach makes it the most accessible upgrade on the platform, with no mid-pipe involvement, no catalytic converter work, and an installation that most owners complete in about an hour with a ratchet and socket set.

MRT also packages the mufflers tightly to the rear bumper to maximize ground clearance, an important practical detail for a sports car that occasionally sees spirited driving on roads that aren't perfectly smooth.

Fits the Toyota GR86, too

Because the Subaru BRZ and Toyota GR86 are mechanically identical platforms sharing the same 2.4L boxer engine and exhaust configuration, the MRT Sport Touring Axle-Back (91Z154) fits both vehicles. GR86 owners searching for a Sport Touring-grade exhaust upgrade can order this system with full confidence in fitment.

T304 Stainless Steel, Engineered to Last

Every MRT BRZ Sport Touring Axle-Back is corrosion-resistant T304 stainless steel throughout. MRT's owner, Scott, brings more than 35 years of OE and aftermarket automotive engineering experience to the development of every BRZ exhaust system, ensuring the sound is tuned specifically for the platform's character, not a generic muffler swap. A limited lifetime warranty backs every system.

Warranty and Quality Assurance

Limited Lifetime Warranty Coverage

MRT backs every BRZ Sport Touring Axle-Back with a limited lifetime warranty against defects in materials and workmanship. For as long as you own your 2022+ Subaru BRZ or Toyota GR86, your exhaust system is fully protected, backed by more than 35 years of automotive engineering experience and T304 stainless steel construction built to last the life of the vehicle.

FAQs: Performance Exhaust Subaru BRZ and Toyota GR86

1. Will the MRT Sport Touring Axle-Back fit my Subaru BRZ or Toyota GR86?

The MRT Sport Touring Axle-Back (Part #91Z154) is designed for the second-generation Subaru BRZ (ZD8) introduced for the 2022 model year and the mechanically identical Toyota GR86 and Toyota 86 on the same platform, all equipped with the 2.4L naturally aspirated boxer engine. It does not fit the first-generation BRZ or Toyota 86 (2013–2021), which uses a different exhaust configuration. If you're unsure which generation your car is, the second-generation BRZ/GR86 was introduced for 2022 with a larger 2.4L engine.

2. How does the Sport Touring sound at low revs versus high revs?

This is one of the most distinctive characteristics of the Sport Touring Axle-Back on the BRZ platform. At low revs, below approximately 3,500 RPM in everyday driving, the boxer engine's exhaust note comes through with a deep, satisfying bass character that's noticeably richer than stock. Above that threshold, the exhaust naturally steps into the background as the engine's induction character becomes dominant. For BRZ owners who've turned off the fake engine sound enhancement, this is precisely the kind of authentic, naturally balanced sound that makes the car feel like the sports car it is.

3. Is this exhaust really suitable for daily driving with a 1/10 drone rating?

Yes, the 1/10 drone rating is genuine and reflects a near-complete absence of cabin resonance at highway cruise speeds. Multiple owners with extensive highway miles on this system describe the exhaust as essentially undetectable at steady speeds. The character improvement is in tone and deep bass presence, not constant volume. Cold starts are quiet and neighbor-friendly. For BRZ owners who commute, road trip, and use their car every day, the Sport Touring is specifically engineered to be the exhaust upgrade you never want to remove.

4. What's the difference between the Sport Touring and the Street Race Axle-Back for the BRZ?

Both systems are built from T304 stainless steel with 2.5-inch mandrel-bent tubing and straight-through muffler designs, but they're tuned for different driving profiles. The Sport Touring (91Z154) is rated 6/10 loudness with a 1/10 drone rating, refined, balanced, and ideal for daily driving with on-demand character at higher revs. The Street Race (91Z153) delivers a louder, more aggressive, always-present performance sound with more exhaust presence at every throttle position. If you drive your BRZ daily and want minimal intrusion alongside real character, the Sport Touring is the right choice. If you want maximum sound impact regardless of daily comfort, the Street Race is the step up.

5. Will this exhaust improve performance on the 2.4L BRZ?

Yes. The straight-through muffler design and 2.5-inch mandrel-bent tubing reduce restriction in the rear section of the exhaust compared to the factory mufflers, improving exhaust gas flow and delivering a noticeable boost in throttle response and engine performance. No ECU tuning is required; the improvement is available immediately upon installation.

6. How difficult is the installation, and are there any tips for best results?

Installation takes approximately 60 minutes using a ratchet and socket set plus common hand tools. All necessary hardware is included. One important tip from owners: install the exhaust and allow it to go through several heat cycles before finalizing the position adjustment. The hardware and hangers settle slightly as the exhaust heats and cools, making it easier to achieve optimal tip alignment relative to the rear bumper cutouts after the system has been run. MRT's installation video on YouTube walks through the full process for the BRZ/GR86 platform. Professional installation is also available at MRT's Plymouth, Michigan facility, call 734-455-5807.

7. What tip finish options are available?

The Sport Touring Axle-Back is available in two tip finishes. The standard Polished T304 Stainless Steel tips deliver a premium mirror shine with dual 4-inch double-wall beveled edge construction that complements the BRZ's clean sports car styling. The Black Ops Matte Black option uses a high-temperature ceramic coating for a bold, understated look that pairs well with darker exterior colors and blacked-out builds. Both options use the same 4-inch double-wall beveled-edge T304 stainless tip construction; the choice is purely aesthetic.

What BRZ Owners Are Saying

BRZ owners consistently describe the MRT Sport Touring Axle-Back as the exhaust they wished came on the car from the factory. The deep bass presence at low revs, subtle pops and bangs through gear changes, and near-zero drone at highway speeds are the most frequently praised characteristics. Multiple owners describe it as the ideal OEM-plus upgrade, more personality without any sacrifice in daily comfort. For owners who have deactivated the BRZ's fake engine sound enhancement, the Sport Touring provides exactly the kind of natural, unaugmented exhaust character that makes the car feel like the authentic sports car it is.

Ready to give your BRZ the sound it was always supposed to have? Order today and enjoy free shipping on your MRT Sport Touring Axle-Back. Questions? Call 734-455-5807 or use live chat during business hours.

Installation

Simple 60-Minute DIY Installation

The Sport Touring Axle-Back is engineered for straightforward do-it-yourself installation using a ratchet and socket set plus common hand tools. Most owners complete the installation in approximately 60 minutes. All necessary hardware is included with your purchase.

One installation tip from owners: after the initial installation, allow the exhaust to go through a few heat cycles before making final position adjustments. This allows the hardware and hangers to settle, making it easier to achieve the best final alignment of the muffler tips relative to the rear bumper cutouts.

MRT's installation video is available on their YouTube channel and walks through the full installation process for the BRZ/GR86 platform.

Professional Installation Available

Located near Plymouth, Michigan? Call 734-455-5807 to schedule a professional installation at MRT's facility. MRT's team can install your Sport Touring Axle-Back while you wait.