The Subaru BRZ, Toyota GR86, Toyota 86, and Scion FR-S have become some of the most popular enthusiast platforms of the modern era. Lightweight construction, rear-wheel drive, sharp handling, and naturally aspirated boxer engines make these cars an excellent foundation for drivers who want a more engaging experience both on the street and through the corners.

But while the BRZ and 86 platforms deliver plenty of personality behind the wheel, many owners want considerably more character from the exhaust.

Extreme Power House is excited to introduce the Valvetronic Designs SHUTO™ Valved Catback Exhaust System for the BRZ, GR86, 86, and FR-S.

Designed for applications spanning 2012 through 2026, the SHUTO™ system gives owners the ability to transform the sound of their boxer engine while retaining control over exhaust volume at the push of a button.

Want an aggressive, motorsport-inspired boxer soundtrack?

Open the valves.

Heading out early in the morning, cruising on the highway, or simply want to keep things more civilized?

Close them.

That ability to switch between two distinct exhaust personalities is what makes the Valvetronic Designs SHUTO™ such an appealing upgrade for enthusiasts who want excitement without committing to maximum exhaust volume every time they start the car.

Give the Boxer Engine the Sound It Deserves

The naturally aspirated boxer engines used throughout the BRZ, GR86, 86, and FR-S lineup have a character all their own.

An aftermarket exhaust can bring much more of that character to the surface.

The Valvetronic Designs SHUTO™ Catback Exhaust is engineered to give the platform a sharper, more engaging and more aggressive exhaust note while still offering the flexibility necessary for a car that may also see daily-driver duty.

Instead of forcing the driver to choose permanently between a loud performance exhaust and a quieter street-oriented system, SHUTO™ provides both experiences within a single exhaust.

Electronic valves control how exhaust gases travel through the rear section of the system.

With those valves open, the exhaust takes a more direct and minimally restricted route for a significantly more aggressive sound.

Close the valves, and exhaust gases are routed through the Valvetronic Designs rear muffler to reduce volume and produce a more subdued exhaust note.

It means the same BRZ or GR86 can deliver very different personalities depending on where—and when—you are driving it.

Valve Open: Unleash the Boxer Sound

Push the button, open the valves, and the character of the SHUTO™ system changes immediately.

In its open configuration, the exhaust is designed to provide a raw, aggressive and motorsport-inspired boxer tone.

Exhaust gases are allowed to flow with minimal restriction through the system, creating a sharper and more pronounced sound that better matches the enthusiast-focused personality of the BRZ and 86 chassis.

This is the setting for the moments when you actually want to hear the car.

A back-road drive.

A spirited weekend run.

Track use.

Or simply those occasions when you want your naturally aspirated boxer engine to sound considerably more exciting than the factory exhaust allows.

For enthusiasts who purchased a BRZ or GR86 because they enjoy being involved in the driving experience, an exhaust note with more personality can make every acceleration run that much more entertaining.

Valve Closed: Keep Things Civilized

A loud exhaust can be entertaining when you're driving hard.

It can be considerably less entertaining during a long highway commute, an early-morning cold start, or when pulling into the neighborhood late at night.

That's where the SHUTO™ system's valve control becomes especially useful.

With the valves closed, exhaust gases are directed through the Valvetronic Designs rear muffler.

The result is a more refined and subdued exhaust tone intended for situations where maximum volume isn't desirable.

You don't have to give up the aggressive side of the car.

You simply decide when you want to hear it.

This makes a valved system particularly attractive for vehicles that serve double duty as both enthusiast cars and daily transportation.

Drive quietly when circumstances call for it, then open the valves when it's time to enjoy the sound.

Electronic Valve Control at the Push of a Button

Sound control shouldn't require crawling underneath the vehicle or adjusting anything mechanically.

The SHUTO™ system uses electronic exhaust valves, allowing drivers to change the exhaust configuration using the included wireless remotes.

Press the control and switch between the open and closed modes whenever the driving situation changes.

The electronic design also means the system requires no vacuum lines to operate the exhaust valves.

That keeps valve control convenient and gives the driver immediate access to both personalities of the system.

It's one of the defining features of Valvetronic Designs exhaust systems: giving the driver control over how the vehicle sounds instead of forcing one exhaust volume to work for every situation.

Resonated Mid-Pipe Helps Keep the Sound Refined

Making an exhaust louder isn't particularly difficult.

Making it sound good across different engine speeds and driving conditions requires considerably more thought.

The SHUTO™ system incorporates a resonated mid-pipe designed to help smooth the boxer engine's exhaust note and reduce unwanted drone while cruising.

That's especially important on cars like the BRZ and GR86.

These vehicles are frequently modified but are also commonly driven every day. An exhaust that sounds exciting under acceleration but becomes tiring during an extended highway drive can quickly take some of the enjoyment out of the car.

By incorporating resonation into the system, Valvetronic Designs aims to preserve the aggressive character enthusiasts want while keeping the overall exhaust experience more controlled and refined.

Combined with the ability to close the valves, it gives owners multiple layers of sound management.

T304 Stainless Steel Construction

A performance exhaust doesn't only need to sound good.

It also needs to withstand years of heat cycles, road use, and exposure to the elements.

The Valvetronic Designs SHUTO™ system is constructed from T304 stainless steel, a material widely used in premium aftermarket exhaust systems because of its combination of durability, corrosion resistance, and appearance.

That stainless steel construction gives the SHUTO™ system a solid foundation whether the car is a daily-driven GR86, weekend BRZ, dedicated enthusiast build, or something that regularly sees spirited driving.

Mandrel-Bent Tubing for Smooth Exhaust Flow

The path exhaust gases follow matters.

Tight bends and poorly formed tubing can introduce unnecessary restrictions into an exhaust system.

Valvetronic Designs addresses this with mandrel-bent tubing, which helps maintain a consistent tube profile through bends and curves.

The goal is smooth, unrestricted exhaust flow throughout the catback system rather than introducing abrupt changes in the exhaust path.

It's another example of the engineering behind the system extending beyond simply changing the vehicle's sound.

Precision TIG-Welded Construction

Take a close look underneath a quality performance exhaust and the workmanship should be immediately apparent.

The SHUTO™ exhaust incorporates precision TIG welding, providing strong, clean joints throughout the system while contributing to the polished, purpose-built appearance expected from a premium aftermarket exhaust.

From the bends in the tubing to the welded joints and valve assemblies, the system is designed not only to perform but also to reflect the level of craftsmanship enthusiasts expect when upgrading a modern sports car.

Dual-Exit Styling That Fits the Platform

The BRZ and 86 have always featured a sporty rear design, and the SHUTO™ system builds on that factory layout rather than trying to completely reinvent it.

Its dual-exit exhaust design provides a balanced appearance from the rear and integrates naturally with the styling of the Subaru BRZ, Toyota GR86, Toyota 86, and Scion FR-S.

A brushed stainless steel finish gives the system a clean OEM+ look, making it suitable for anything from a relatively understated street build to a heavily modified enthusiast car.

The result is an exhaust that adds visual presence without looking out of place on the chassis.

Direct Bolt-On Installation

A complete catback exhaust upgrade shouldn't require extensive fabrication just to get it onto the vehicle.

Valvetronic Designs designed the SHUTO™ system as a direct bolt-on exhaust, utilizing factory mounting locations for straightforward installation and proper alignment.

That makes it an attractive option for owners looking for a substantial change in sound without turning the upgrade into a custom exhaust fabrication project.

As with any full exhaust installation, professional installation is recommended when appropriate to ensure the system is properly positioned, tightened, and aligned.

One Exhaust for Two Generations of Enthusiast Favorites

One of the most impressive aspects of the SHUTO™ application is the breadth of vehicles it supports.

The BRZ/86 platform has now developed through multiple generations and several different model names, but the core philosophy has remained remarkably consistent: lightweight, naturally aspirated, rear-wheel-drive fun.

The SHUTO™ system covers applications including:

Subaru BRZ

2012–2026 Subaru BRZ

From the original first-generation BRZ through the newer second-generation platform, Subaru's lightweight sports coupe has built a loyal enthusiast following.

Scion FR-S

2012–2015 Scion FR-S

The FR-S introduced many Toyota enthusiasts in the U.S. market to the platform and remains a popular foundation for modification today.

Toyota 86

2016–2021 Toyota 86

Following the Scion era, the platform continued in North America under the Toyota 86 name, carrying the same rear-wheel-drive sports-car philosophy forward.

Toyota GR86

2022–2026 Toyota GR86

The second-generation GR86 added more performance and refinement while retaining the lightweight, driver-focused formula that made the original platform successful.

Whether you're modifying an early FR-S or a brand-new GR86, the SHUTO™ system gives owners across the platform access to the same combination of sound, craftsmanship, and valve control.

An Ideal Upgrade for a Daily-Driven BRZ or GR86

Many exhaust systems make the most sense on cars that are rarely used for anything other than recreational driving.

A valved exhaust is different.

The SHUTO™ system is especially appealing for owners who drive their car frequently because the valve system allows the exhaust experience to adapt to different circumstances.

Imagine leaving home early in the morning.

Keep the valves closed.

Once you're away from residential streets and heading toward an open road, press the remote and open them.

Later, you settle into a long highway drive.

Close the valves again for a more subdued cabin experience.

When the road opens up and you want to hear the boxer engine, switch right back.

That flexibility is difficult to achieve with a conventional fixed-volume exhaust.

Build Your BRZ or GR86 Without Sacrificing Usability

Performance modifications often involve compromises.

More aggressive suspension can reduce ride comfort.

Track-focused tires can sacrifice longevity.

A loud exhaust can become tiring when you're not in the mood for it.

A quality valved exhaust helps remove one of those compromises.

The SHUTO™ system gives the BRZ, GR86, 86, and FR-S a much more exciting soundtrack without requiring the vehicle to remain loud all the time.

That makes it an excellent addition to a wide range of builds.

For an otherwise stock vehicle, it can immediately introduce more character and driver engagement.

For a modified street car, it can complement wheels, suspension, aero, intake, and other bolt-ons.

And for enthusiasts gradually transforming their car into something more focused, the exhaust provides a foundation that can remain enjoyable during everyday use.

SHUTO™ Catback Exhaust Key Features

The Valvetronic Designs SHUTO™ Valved Catback Exhaust System brings together the features enthusiast drivers typically want from a modern exhaust upgrade:

• Electronic valved exhaust control
• Aggressive valve-open exhaust note
• Quieter and more refined valve-closed mode
• Included wireless valve-control remotes
• No vacuum lines required
• T304 stainless steel construction
• Resonated mid-pipe
• Mandrel-bent exhaust tubing
• Precision TIG welds
• Dual-exit exhaust design
• Brushed stainless steel finish
• Direct bolt-on installation
• Broad 2012–2026 BRZ / 86 platform fitment

It's an exhaust designed to add excitement where enthusiasts want it without unnecessarily sacrificing usability everywhere else.

Turn Up Your BRZ, GR86, 86 or FR-S at Extreme Power House

The BRZ and 86 platform is all about driver involvement.

A more engaging exhaust note only adds to that experience.

The Valvetronic Designs SHUTO™ Valved Catback Exhaust gives owners the ability to bring out the naturally aspirated boxer engine's aggressive side while still maintaining the option for quieter operation whenever the situation demands it.

Open the valves and enjoy a raw, motorsport-inspired soundtrack.

Close them and bring the volume back down for everyday driving.

One exhaust.

Two distinct personalities.

And complete control at the push of a button.

The Valvetronic Designs SHUTO™ Catback Exhaust for the Subaru BRZ, Toyota GR86, Toyota 86, and Scion FR-S is now available at Extreme Power House.

Shop the Valvetronic Designs SHUTO™ Valved Catback Exhaust at Extreme Power House: https://x-ph.com/valvetronic-designs-shuto-catback-exhaust-for-brz-gr86-86-fr-s-sub-brz-vses-br-rc/