Pacbrake’s DirectMount 4” PRXB Exhaust Brake Kit

NOTE: This exhaust brake kits doesn’t need a Pacbrake Transmission Controller for the 2006 and newer 5.9L Auto Trucks.

  Pacbrake’s flagship product, the PRXB (pressure regulated exhaust brake), is the unquestioned leader in the supplemental brake industry. The patented PRXB design delivers the strongest braking horsepower, greatest speed reductions and shortest stopping distances possible without the use of service brakes. It maintains optimum retarding performance by maximizing the exhaust backpressure throughout the entire RPM range. Unlike a typical exhaust brake, which requires high RPMs to work properly, the PRXB delivers constant exhaust pressure (braking) as early as 1200 RPM through to the maximum allowable RPM.

Pacbrake Features:

• 50% more efficient at lower RPM’s.
• MORE RELIABLE. Patented 90 degree non-contacting butterfly valve specifically engineered to prevent sticking.
• SAFER. Pacbrake’s back pressure limiter protects against engine overpressure.
• LONGER LIFE. Exclusive Arcor Nitride exhaust brake coating helps prevent corrosion and maintains lubricity.
• Save on brake relines ($1500-$7500 per vehicle) pays for itself
• Less stress while braking on down slopes
• Quiet enough to use in the city; and legal
• Less expensive and less weight than engine brakes
• Easy VOEM or after market installation
• Virtually maintenance free
• FREE SHIPPING