Flowmaster FlowFX Stainless Muffler - 2-1/2 in Side Inlet - Dual Offset 3 in Outlet - 24 in Long 1425031 1999-2015 GMC Sierra 1500

1999-2015 GMC Sierra 1500

00 in Contact

2007 GMC Sierra 2500 HD Classic

2 SBF manifold is available to work with 105MM throttle bodies

Flowmaster FlowFX Stainless Muffler - 2-1/2 in Side Inlet - Dual Offset 3 in Outlet - 24 in Long 1425031 1999-2015 GMC Sierra 1500Product Description: Muffler FlowFX 2. 5 in Front Inlet Dual 2. 5 in Outlets 18 x 9 x 4 in Oval Body 24 in Long Stainless Natural Universal In 1983 California Sprint Car racers were experiencing 'excessive sound' issues and were told to quiet the cars down or stop racing. Flowmaster founder Ray Flugger created Flowmaster's first patented design of racing mufflers. Ray attached handles to ease carrying the race mufflers, and the mufflers became known