COBB Catback Exhaust Replacement Hardware Kit (Gasket and bolts) - Mazdaspeed 3 2010-2013Replacement hardware kit for your COBB Cat Back Exhaust for MazdaSpeed3 2010 2013. WHY? Has your hardware for your COBB Cat Back Exhaust gone missing? COBB Tuning is happy to offer you our Gen2 Mazdaspeed3 Cat Back Hardware Kit to replace those components that have decided to walk away! A simple and easy way to get you back up and running! FEATURES MazdaSpeed3 Gen2 SS 3. 0" Cat Back Exhaust Hardware Kit Includes Everything in Product Pictures Above 1