02-06 GM P/U 4.8/5.3L Cat Back Exhaust downpipes allowing more outside air to

allowing more outside air to be pushed into the engine via twin-ducts while also providing structural stiffness to the strut towers

Flex in these bushings allows the rear wheels to behave sloppily under heavy loads

Intended for 49 state use where permitted by local regulations

Exhaust System - Xtreme - Cat-Back - 3 in Diameter - Dual Side Exit - 4 in Black Polished Tips - Stainless - Natural - Ford Coyote - Ford Fullsize Truck 2021-24 - Kit

This allows exhaust gases to exit the turbine more efficiently and reduces backpressure on the turbine side

02-06 GM P/U 4.8/5.3L Cat Back Exhaust downpipes allowing more outside air toExhaust System Sport Cat Back 3 in Diameter 4 in Tip Stainless Natural GM LS Series GM Fullsize Truck 1999 2006 Kit