Wagner Tuning 300CPSI downpipe kit with racing catalytic converter for Subaru WRX STI 2007-2018.
FEATURES
High-quality cast stainless steel 1.4301 (SS304)
Fully Ø76mm (3″)
CAD-designed and flow-optimized
1 lambda probe connection
High-quality racing metal catalytic converter (300 CPSI with EU6 coating)
100% perfect fit, easy to replace compared to the stock part
Less thermal load on the turbocharger
Higher performance by reducing backpressure
More torque
Available with a Ø76mm (3″) post-replacement pipe
