3″ Quad Tip Cat Back Exhaust Subaru STi 2008-2014 Hatchback 515100



The COBB 3″ Stainless Steel Quad Tip Cat-Back Exhaust System has been updated! For the latest revision click here: Cobb tuning Quad Tip Cat-Back Exhaust 08-14 WRX STI. The all new cat back part # 515101 delivers big gains by allowing the engine and turbo to “breath”. This exhaust system has been designed with a 3″ diameter primary with minimal bends that reduce turbulence under pressure relieving back pressure for increased horsepower, increased torque and improvements in throttle response with reduced turbo lag.

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