PRXB Exhaust Brake Kit – C44037 – DirectMount 4 Inch Exhaust (Air Actuated) LB7 Duramax " Part Number: II901-R1

Part Number: II901-R1

99 Again" Shirts

Does Not include recommended high flow exhaust manifold

Smooth plenum expansion creates signature performance inline-6 appearance

PRXB Exhaust Brake Kit – C44037 – DirectMount 4 Inch Exhaust (Air Actuated) LB7 Duramax " Part Number: II901-R1Product Description Provides 50 percent More Braking Power at Lower RPM's. PRXB gives you the best holdback in the 1400 1800 RPM range (where you typically drive). The spring controlled pressure regulated mechanism on the exhaust brakes protects against engine overpressure. When the brake is deactivated, exhaust flow is unrestricted and won't interfere with power output. Patented 90 degree Non contacting Butterfly Valve is specially engineered to