It has been almost 30 years since we started shipping our first exhaust brakes. With that many hill and mountain roads experienced, we used the knowledge gained to continue to deliver the best designed exhaust brake for your application. Incorporating BD's exclusive Variable Orifice Technology, BD's solid, offset butterfly, spring loaded cylinder and pressure regulation provides up to 150 retarding horsepower throughout the engine's RPM range - not just at high rpm like some designs that use holes or additional parts and claim it as a better idea. A range of rugged, cast-iron housings for Dodge, Ford, Chevy and motor home applications that incorporate BD's exclusive alumibronze bushing, piston ring-seals and stainless steel butterfly shaft has proven to stand-up under the harsh, high heat conditions of the exhaust environment. BD's butterfly valve and rotating shaft are made of stainless steel to resist corrosion. An air compressor is included in most kits for newer pick-up trucks. FEATURES Over 65psi of retarding back pressure BD's exclusive Variable Orifice Technology Adjustable pressure regulation Pneumatic spring loaded cylinder BD's solid, offset butterfly Rugged, cast-iron housings BD's exclusive alumibronze bushing Piston ring-seals Stainless steel butterfly shaft Proven to stand-up under the harsh, high heat conditions of the exhaust environment IP67 sealed air compressor included Warm Up mode available to help bring engine up to normal operating temperature quicker when at idle Kit fits 4in and 5in exhaust All mounting hardware provided There's a reason why the BD Brake is the most widely-recognized diesel exhaust brake in the industry: It's the best! Compare it to the competition, and you'll see why. WARRANTY Parts 24-Months 24,000 Miles Labour 12-Months 12,000 miles NOTE Exhaust Back Pressure test gauge kit 1030050 suggested for the set-up of exhaust brakes This kit is intended to be used on non emission vehicles.