Flowmaster Signature Series Cat-Back Stainless Exhaust System - 3 in Diameter - 4 in Tip - GM Fullsize Truck 2014-19 C402514 These Ultra Pro Magnum rockers

These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure

391 lb/in Spring Rate

Dial Indicator Bracket

This product is NOT legal for use or for sale in the State of California

Flowmaster Signature Series Cat-Back Stainless Exhaust System - 3 in Diameter - 4 in Tip - GM Fullsize Truck 2014-19 C402514 These Ultra Pro Magnum rockersProduct 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