Bastuck | Valve exhaust system MSD & ESD (Cat-Back) | GR 86 & BRZ II | ECE approval

We're offering you the Bastuck valve-valve exhaust system for your GR86/BRZ II. The system is ECE-approved and therefore legal!

For the race versions (cheaper, louder, without approval) please write to us if you are interested :)

The system is a "cat-back" system installed after the original OPF, thus replacing your mid- and rear mufflers (MDF/ESD), resulting in a deep, bassy sound. This is especially true compared to systems that only replace the rear muffler, as the entire sound is tuned to match the original sound. The original front muffler (with main catalytic converter and OPF) remains intact.

Ordering information for wholesale goods: We would like to be transparent and inform you that this item will be shipped directly from the wholesaler. As of now, shipping and storage in our facility would be too expensive. Regardless, we are the seller and liable for any defects, so it will have no impact on you, except that a different shipper will be listed on the package.

Why Bastuck?

The Bastuck exhaust system is simply the right choice if you want legal sound from your Toyobaru. The flap control on the rear muffler allows you to cruise comfortably in town or on long journeys, with an enhanced but not intrusive sound experience (in the first half of the sound video, "Drive Mode: Silent"). However, as soon as you reach 70 km/h or manually open the flap with your remote control on the racetrack, a sound orgy begins.

With this system, you can finally legally enjoy decent sound, even with the very low idling noise of the GR86/BRZ II. And this flap control is completely legal! It's important to note that the remote control may only be used off-road.

But Bastuck doesn't just deliver a solid sound. You also get a power increase of 5 kW and 6 Nm, as you can see from the performance chart below.

Of course, there is also a wonderful look with a duplex exhaust system with 2 diagonally cut (25°) tailpipes with a diameter of 110mm.

You can decide for yourself whether you want normal stainless steel covers or carbon covers.

Technical details

• System made entirely of stainless steel
• Inner diameter: 63.5mm (2.5 inches)
• Tailpipes: 2 individual tailpipes, each 110mm bevelled
• Incl. mounting material (for exhaust and electrical kit for the flap)
• Includes remote control for flap control (This article is not approved for use on public roads – use for racing purposes only!)
• The version with flap is slightly heavier than the original system

Assembly instructions

Here you'll always find Bastuck's installation instructions for the rear silencer itself and for the electrical kit for the valve control. Please review the installation instructions beforehand, as installing the electrical kit is particularly complex!

Below you can find Bastuck's original sound video for the system. The first half shows the "Silent" mode, the second half the "Race" mode with the flap open. You can also find a customer video in the media, where the first part shows a cold start with the flap open, and the second part shows a cold start with the flap closed.