Flowmaster Signature Series Cat-Back Stainless Exhaust System - 3 in Diameter - 4 in Tip - GM Fullsize Truck 2014-19 RS004C1506 They have 20% more exhaust

They have 20% more exhaust flow than cast iron Vortec heads

0L Mustang

these Dominator Dirt Rockers add a final touch to the lower body of your dirt car

8L)/262 (4

DW300C series

Flowmaster Signature Series Cat-Back Stainless Exhaust System - 3 in Diameter - 4 in Tip - GM Fullsize Truck 2014-19 RS004C1506 They have 20% more exhaustProduct Description: Exhaust System Signature Series Cat Back 3 in Diameter 4 in Tip Stainless Natural GM Fullsize Truck 2014 19 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 as the