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Exhaust› Exhaust Pipes, Systems and Components

Pacbrake

~(34 lbs. 17X16X10)~ In Line Mount 4 inch PRXB High Performance Exhaust Brake Kit For Dodge RAM 7.5-17 Cummins 6.7L ISB 24 Valve Engine W/Standard and 68RFE Automatic Transmission Pacbrake

$1,856.74 $1,671.07 Save $185.67

SKU: P00S C44038

In Stock
In Stock
Ships by Jun 20
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Pacbrake PRXB Exhaust Brake Kit offers the highest braking power to lowest price ratio, providing 50% more braking power at lower RPMs (1400-1800 RPM range). It features a spring-controlled pressure-regulated mechanism to protect against engine overpressure, and unrestricted exhaust flow when deactivated. The patented 90-degree non-contacting butterfly valve maximizes backpressure and prevents seizing. Components are treated with an Arcor nitride coating for enhanced wear and corrosion resistance, and improved lubricity. Each kit includes the PRXB Exhaust Brake, a controller (if required), and a Pacbrake Onboard Air Kit (HP325 Series Compressor, 0.5 Gal Air Tank, 25 Foot Coiled Air Hose, Air Accessories, and Fittings Kit).

Fitment

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Specifications

BrandPacbrake
Part NumberP00S C44038

Videos

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Pacbrake Direct & Inline Exhaust Brake Mounts Explained
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Pacbrake Exhaust Brakes Explained On Light Duty Trucks | On-Board Air vs Existing On-Board Air

Pacbrake Exhaust Brakes Explained On Light Duty Trucks | On-Board Air vs Existing On-Board Air
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Pacbrake PRXB Install and Test on 2001 Cummins 5.9 | Control Heavy Loads
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PRXB Maintenance with Pacbrake's SuperLube
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Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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