Pacbrake InLineMount 4" PRXB Exahust Brake - 03-07 Dodge Cummins (Manual), 05-07 Dodge Cummins (Automatic)

PRXB offers the highest braking power to lowest price ratio available. Pacbrake’s flagship product is the unquestioned leader in the supplemental brake industry. It has changed the way people think about exhaust brakes by providing performance, safety and durability that is unmatched by any other exhaust brake on the market.