The kit includes an exhaust pipe, tail pipe, and 3-way catalytic converter. Give your vehicle a throaty purr with a GMC Accessories Exhaust System Kit. This kit reduces restrictions in the exhaust pipes and expands the diameter of stock pipes, allowing your engine to breathe better. Give your vehicle a throaty purr with a Chevrolet Accessories Exhaust System Kit. Give your Sierra increased horsepower and a more assertive sound with the GMC Performance 6.2L Short Wheelbase Cat-Back Dual Exit Exhaust Upgrade System. This exhaust system offers an increase of up to 13 horsepower and 8 lb.-ft. of torque, while reducing backpressure by 40% at 335-g/s, based on correlated flow testing. Designed and validated by Chevrolet Performance engineers, this 304 Stainless Steel Cat-Back System is tuned to maximize the performance experience while minimizing drone. This Performance Exhaust Upgrade System includes the rear muffler assembly, Y-pipe, exhaust clamps and all necessary mounting hardware. It is 50-state emissions legal and will not void the New Vehicle Limited Warranty.

The kit includes an exhaust pipe, tail pipe, and 3-way catalytic converter. Give your vehicle a throaty purr with a GMC Accessories Exhaust System Kit. This kit reduces restrictions in the exhaust pipes and expands the diameter of stock pipes, allowing your engine to breathe better. Give your vehicle a throaty purr with a Chevrolet Accessories Exhaust System Kit. Give your Sierra increased horsepower and a more assertive sound with the GMC Performance 6.2L Short Wheelbase Cat-Back Dual Exit Exhaust Upgrade System. This exhaust system offers an increase of up to 13 horsepower and 8 lb.-ft. of torque, while reducing backpressure by 40% at 335-g/s, based on correlated flow testing. Designed and validated by Chevrolet Performance engineers, this 304 Stainless Steel Cat-Back System is tuned to maximize the performance experience while minimizing drone. This Performance Exhaust Upgrade System includes the rear muffler assembly, Y-pipe, exhaust clamps and all necessary mounting hardware. It is 50-state emissions legal and will not void the New Vehicle Limited Warranty.