Flowmaster FlowFX Dual Mode Muffler W/ Active Valve For 2019-2021 GM 1500 5.3L output shaft Conventional damping then firms up

Conventional damping then firms up during faster shaft speeds resulting in a jarring ride

3L (+19 HP & +24 Ft

Improved Casting In "Problem Areas"

Take your Ram 3500 to new heights with the Zone Offroad 4

Rudy's new Coolant Reservoir is made from 6061 aircraft grade aluminum which is TIG welded and pressure tested for maximum strength

Flowmaster FlowFX Dual Mode Muffler W/ Active Valve For 2019-2021 GM 1500 5.3L output shaft Conventional damping then firms upIntroducing the new FlowFX Active Dual mode muffler featuring our new W. A. V. E. Technology (Wireless Active Valve Exhaust) for all 2019 2021 GM Silverado Sierra 1500 (new body style) with 5. 3L engine. This direct fit replacement muffler has split personalities with a nice performance tone over the stock exhaust system, thanks to the Flowmaster FlowFX performance muffler. The system also features a high quality wireless controlled actuator valve on