
The Pacbrake PRXB Exhaust Brake is a premier solution for those seeking the perfect balance of braking power and value. As Pacbrake’s flagship product, it leads the supplemental brake industry by redefining the performance and safety expectations of exhaust brakes. Designed with cutting-edge technology, the PRXB provides unmatched durability and efficiency for drivers who demand the best.
Key Features:
- Spring-Controlled Pressure Regulation: This innovative mechanism safeguards your engine against overpressure, ensuring safe and reliable operation.
- Engine-Specific Design: Tailored for individual engine applications, the PRXB maximizes performance and reliability, avoiding the drawbacks of one-size-fits-all solutions.
- Unrestricted Exhaust Flow: When deactivated, exhaust flow remains free, preventing any interference with your vehicle's power output.
- Patented 90-Degree Non-Contacting Butterfly Valve: Engineered to enhance backpressure while preventing seizing, optimizing braking efficiency.
- Arcor Nitride Coating: This industry-exclusive coating improves wear and corrosion resistance, enhancing the durability of the exhaust brake.
- Precision Machined Surfaces: Eliminate the need for gaskets, significantly reducing the risk of leakage and maintenance issues.
- Robust Construction: Built with hard anodized aluminum and stainless steel components, featuring high-performance seals for longevity.
- User-Friendly Maintenance: Regular use of the exhaust brake, combined with periodic applications of Superlube (Pacbrake’s heat-resistant lubricant), keeps the brake in top condition.
- High Temperature Resistance: Capable of withstanding extremely high exhaust temperatures while remaining compliant with the latest emission regulations.
- Severe Duty & Military Approved: Designed for use in the toughest conditions, ensuring performance you can rely on.
Benefits:
- Unmatched Braking Power: Delivers the strongest braking horsepower, greatest speed reductions, and shortest stopping distances without relying on service brakes.
- Optimal Retarding Performance: Maintains peak performance by maximizing exhaust backpressure throughout the entire RPM range.
- Effective Braking Across RPMs: Provides maximum braking pressure starting as low as 1200 RPM, extending to the maximum allowable engine RPM.
- Engine Protection: Advanced technology safeguards your engine from potential overpressure, ensuring enhanced performance and peace of mind.
Kit Contents:
The PRXB Kit includes:
- Exhaust Brake
- 5ft Coiled Air Hose
- Air Accessories and Fittings Kit
This kit is designed for vehicles equipped with existing onboard air, providing a straightforward upgrade from any standard exhaust brake to the PRXB model for improved design, longevity, and significantly enhanced performance.
Notes:
- Applicable for vehicles built up to January 4, 2004 only.
- All 2003-2004 kits are not compatible with Banks Turbo Back Exhaust but will work with Banks Cat Back Monster Exhaust.
- Suitable for applications with aftermarket turbochargers and designed for air-actuated systems.
Upgrade to the Pacbrake PRXB Exhaust Brake for unparalleled braking performance, control, and safety when towing or hauling, ensuring a superior driving experience.

The Pacbrake PRXB Exhaust Brake is a premier solution for those seeking the perfect balance of braking power and value. As Pacbrake’s flagship product, it leads the supplemental brake industry by redefining the performance and safety expectations of exhaust brakes. Designed with cutting-edge technology, the PRXB provides unmatched durability and efficiency for drivers who demand the best.
Key Features:
Spring-Controlled Pressure Regulation: This innovative mechanism safeguards your engine against overpressure, ensuring safe and reliable operation.
Engine-Specific Design: Tailored for individual engine applications, the PRXB maximizes performance and reliability, avoiding the drawbacks of one-size-fits-all solutions.
Unrestricted Exhaust Flow: When deactivated, exhaust flow remains free, preventing any interference with your vehicle's power output.
Patented 90-Degree Non-Contacting Butterfly Valve: Engineered to enhance backpressure while preventing seizing, optimizing braking efficiency.
Arcor Nitride Coating: This industry-exclusive coating improves wear and corrosion resistance, enhancing the durability of the exhaust brake.
Precision Machined Surfaces: Eli[...]
The Pacbrake PRXB Exhaust Brake is a premier solution for those seeking the perfect balance of braking power and value. As Pacbrake’s flagship product, it leads the supplemental brake industry by redefining the performance and safety expectations of exhaust brakes. Designed with cutting-edge technology, the PRXB provides unmatched durability and efficiency for drivers who demand the best.
Key Features:
- Spring-Controlled Pressure Regulation: This innovative mechanism safeguards your engine against overpressure, ensuring safe and reliable operation.
- Engine-Specific Design: Tailored for individual engine applications, the PRXB maximizes performance and reliability, avoiding the drawbacks of one-size-fits-all solutions.
- Unrestricted Exhaust Flow: When deactivated, exhaust flow remains free, preventing any interference with your vehicle's power output.
- Patented 90-Degree Non-Contacting Butterfly Valve: Engineered to enhance backpressure while preventing seizing, optimizing braking efficiency.
- Arcor Nitride Coating: This industry-exclusive coating improves wear and corrosion resistance, enhancing the durability of the exhaust brake.
- Precision Machined Surfaces: Eliminate the need for gaskets, significantly reducing the risk of leakage and maintenance issues.
- Robust Construction: Built with hard anodized aluminum and stainless steel components, featuring high-performance seals for longevity.
- User-Friendly Maintenance: Regular use of the exhaust brake, combined with periodic applications of Superlube (Pacbrake’s heat-resistant lubricant), keeps the brake in top condition.
- High Temperature Resistance: Capable of withstanding extremely high exhaust temperatures while remaining compliant with the latest emission regulations.
- Severe Duty & Military Approved: Designed for use in the toughest conditions, ensuring performance you can rely on.
Benefits:
- Unmatched Braking Power: Delivers the strongest braking horsepower, greatest speed reductions, and shortest stopping distances without relying on service brakes.
- Optimal Retarding Performance: Maintains peak performance by maximizing exhaust backpressure throughout the entire RPM range.
- Effective Braking Across RPMs: Provides maximum braking pressure starting as low as 1200 RPM, extending to the maximum allowable engine RPM.
- Engine Protection: Advanced technology safeguards your engine from potential overpressure, ensuring enhanced performance and peace of mind.
Kit Contents:
The PRXB Kit includes:
- Exhaust Brake
- 5ft Coiled Air Hose
- Air Accessories and Fittings Kit
This kit is designed for vehicles equipped with existing onboard air, providing a straightforward upgrade from any standard exhaust brake to the PRXB model for improved design, longevity, and significantly enhanced performance.
Notes:
- Applicable for vehicles built up to January 4, 2004 only.
- All 2003-2004 kits are not compatible with Banks Turbo Back Exhaust but will work with Banks Cat Back Monster Exhaust.
- Suitable for applications with aftermarket turbochargers and designed for air-actuated systems.
Upgrade to the Pacbrake PRXB Exhaust Brake for unparalleled braking performance, control, and safety when towing or hauling, ensuring a superior driving experience.