Downpipe kit with 300CPSI racing catalytic converter for Subaru WRX STI 2007-2018 - high-quality cast stainless steel 1.4301 (SS304) - complete Ø 76mm (3") - CAD-Designed and Flow-Optimized - 1x lambda probe connection - high-quality racing metal catalytic converter (300 CPSI with EU6 coating) - 100% perfect fit, simply exchange for a standard part - less thermal load for the turbocharger - Increased performance by reducing back pressure - Significantly more torque Off road use only.
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