Greddy Evolution GT Cat Back Exhaust Subaru WRX / STI 2011-2014 Sedan

Evolution GT 304 SS Cat-Back Exhaust System (10168300) by GReddy. Exhaust Pipe Material: 304 SS. Exhaust Type: Cat-Back. Specifications: Number of pieces: 3 pcsPiping: 76 mm (3")Tip(s): 89 mm (3.5")Gasket(s): 3" oval (qty: 2x included) replacementResonator: yesDyno Chart Features: Retains unique Evolution off-set tip styling, while improving internal constructionHand TIG-weld 304 Stainless SteelEffective straight-through muffler design Note: Are you using a stock j pipe or downpipe? If yes, the GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter p/n 077046, is required.