The A'PEXi RS Evolution Extreme Muffler brings the brand’s race-proven performance and refined sound design to the latest GR86 and BRZ platforms. Building upon the original RS Evolution system, this version adds full titanium tips and a hybrid muffler construction that combines A'PEXi’s signature N1 free-flowing performance with the smooth tone of the Hybrid Megaphone Evolution system.

Key Features

Premium TIG-Welded SUS304 Stainless Steel: Ensures durability, corrosion resistance, and precise OEM-level fitment.
Hybrid Sound Engineering: Produces a deep, refined exhaust tone without excessive cabin drone.
Patented Megaphone Piping Design: Promotes a swirling exhaust gas effect to enhance torque and throttle response across the powerband.
Full Titanium Tips: Dual-wall rolled and angle-cut tips offer a distinct motorsport-inspired finish.
Direct Bolt-On Fit: Designed specifically for the ZD8 / ZN8 chassis; no cutting or welding required.

A'PEXi RS Evo Extreme Muffler for 2022+ Toyota GR86 / Subaru BRZ

Why We Like It

The RS Evolution Extreme Muffler perfectly balances aggressive performance with OEM-like refinement. The system gives the FA24D engine a clean, resonant tone and crisp throttle response while maintaining a composed highway character. It’s ideal for enthusiasts who value both sound quality and craftsmanship.

Specifications

Exhaust Type: RS Evolution Extreme Muffler
Piping Diameter: 60mm
Tip Diameter: 123mm x 2
Pieces: 2
Exhaust Tip Style: Titanium dual-wall rolled, angle-cut (riveted)
Piping Material: SUS304 Stainless Steel
Muffler Material: SUS304 Stainless Steel
Muffler Tip Material: Titanium
Bolt-On: Yes

Installation Notes

Direct bolt-on to factory midpipe; no cutting or modification required.
Includes new gaskets for leak-free sealing:

Factory OE Donut Gasket x1
APEXi 3901-1660 Gasket x1

Reuses factory hangers for easy alignment.
Professional installation recommended for optimal fitment.

What’s in the Box

A'PEXi RS Evolution Extreme Muffler assembly (left and right sections)
Gaskets (Factory OE Donut + 3901-1660)
Mounting hardware
Installation instructions

Compatibility & Disclaimers

Designed for naturally aspirated FA24D-powered GR86 and BRZ models. Intended for off-road or motorsport use in some regions. Check local laws regarding noise and emissions compliance before installation.

2022+ GR86 / BRZ Cat-Back Exhaust Systems

APEXi RS EVO Extreme Performance Catback Exhaust - 2022+ Subaru BRZ / Toyota GR86