Invidia R400 Turbo Back Exhaust - Straight Cut Polished Stainless Tips - Subaru WRX 15-21 (6MT) 535i and provides controlled boost venting

and provides controlled boost venting across the full boost range

Detailed installation manual

Enables use of high-flow aftermarket side-feed injectors

closed-loop Fluid Lock system that keeps your intake air clean and your engine running at its best

Invidia R400 Turbo Back Exhaust - Straight Cut Polished Stainless Tips - Subaru WRX 15-21 (6MT) 535i and provides controlled boost ventingInvidia's most popular exhaust system. Specifically designed to fill the sound gap between the Q300 and N1 system, the R400 produces a unique, agressive note while minimising harsh cabin noise (particularly at highway speeds). The R400 muffler was designed using years of experience from Invidia's engineers to allow the perfect balance between unrestricted exhaust gas flow and sound dampening. This exhaust system will provides a pronounced exhaust note