Mishimoto Stainless Steel Cat Back Exhaust - 2015-2021 Subaru WRX/STI

Spectral Performance proudly carries a great selection of both performance and cooling upgrades brought to you by Mishimoto. 

Here, you are looking at the Mishimoto Stainless Steel Cat-Back Exhaust System. This is a high-performance cat-back exhaust system designed with smooth bends that are combined with an increased piping diameter. The result is an increase in both horsepower and torque, all while producing an aggressive exhaust note. 

DETAILS:

• Direct fitment
• Dyno-proven maximum gains of up to 9 WHP and 8 WTQ and peak gains of 4 WHP and 3 WTQ using 93 octane fuel while maintaining safe AFRs on a stock tune
• Extremely aggressive turbo and exhaust tone under acceleration and boost
• Mates with the Mishimoto, stock, or most aftermarket downpipes
• Designed with oval mufflers that prevent highway drone
• Quad 3.5" staggered double-wall polished tips
• 304 stainless steel mandrel-bent construction
• 3" to 2.25" exhaust split helps maintain proper exhaust velocity
• TIG-welded
• Includes v-band clamps, hardware, and gasket