Description
REMARK Sports Touring Cat-Back Exhaust for 2015–2021 Subaru WRX/STI (VA). Give the VA WRX/STI a dedicated Sports Touring cat-back with a four-tip rear layout.
A 3-inch main pipe transitions to dual 2.5-inch branches and two rear mufflers. The 4-inch outlets emphasize the factory quad-tip arrangement while the mufflers and selected mid-pipe determine the system’s sound-control layout.
The resonator is an acoustic-control element within the exhaust path. It should not be confused with a catalytic converter or treated as a guarantee against cabin drone. Evaluate the complete configuration, including rear mufflers and any changes ahead of the cat-back, when selecting the desired sound level.
Technical Specifications
- Manufacturer Part Number: RK-C4076S-01C
- Application: 2015–2021 Subaru WRX/STI (VA)
- Selected Configuration: 4-Inch Stainless Steel Quad Tips / Resonated
- Main piping: 3-inch T304 stainless steel
- Rear branches: Dual 2.5-inch tubing
- Tips: Four 4-inch slant-cut outlets
- Mufflers: Two stainless steel canisters
- Assembly: Four-piece cat-back
- Fabrication: TIG welded
Fitment and Installation
For the 2015–2021 VA platform. Not interchangeable with OEM-layout REMARK axle-back rear sections. Follow the manufacturer’s flange and gasket instructions; do not add an adapter based only on nominal pipe diameter.