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GrimmSpeed's catted downpipe features an innovative divided wastegate outlet. Proudly made in the USA, the GrimmSpeed downpipe features a high-flow 300-cell metal substrate catalytic converter for maximum performance.
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Proudly made in the USA - Design, Materials and Fabrication
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FARO™ Arm Designed - We are at the leading edge of new product design hardware
- O2 Bungs for factory sensor and aftermarket wideband AFR
- Divorced wastegate for optimal flow
- High-flow, 300 cell, metallic substrate catalytic converter
- GrimmSpeed gaskets included - A $40 Value!
Install Guide
Fits all 2008-2014 Subaru WRX and 2008-2022 STI, and 2005-2009 Legacy GT / Outback XT.
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