Grimmspeed Catback Exhaust System, Un-Resonated - Subaru 11-21 WRX/STI SEDAN - 070034 Switch Panel durable red or black wrinkle

durable red or black wrinkle powder coat finish that looks incredible and matches your other GrimmSpeed parts

5 to 18:1 AFR

The spring tension of the segmented retaining ring is carefully calculated and tested for optimal performance

Re-defining style

2LSU Wideband UEGO O2 replacement sensor kit includes only the sensor (with attached cable and male connector) and is intended to replace an existing mounted wideband sensor used with AEM wideband air/fuel UEGO controllers

Grimmspeed Catback Exhaust System, Un-Resonated - Subaru 11-21 WRX/STI SEDAN - 070034 Switch Panel durable red or black wrinkleWith so many catback options available, our goal was to create a unique, refined sound in an extremely high quality system. We've been casually referring to it as the gentleman's catback around the shop, to ensure that our mission wasn't lost in all of the craziness. We also wanted to produce a single system that would fit as many models as possible. Using a unique hanger design and by including a set of four custom polyurethane hangers with each kit,