WOD Compact HydroBoost Brake Kit w/ Wilwood Compact Master Cylinder
WA01008-WS
The Wide Open Design Wilwood HydroBoost Brake System is a high-performance braking solution engineered for heavy off-road rigs, rock crawlers, Ultra4 race cars, and custom tube chassis builds. By combining a compact Wilwood 1-1/8" tandem master cylinder with a powerful hydraulic-assist HydroBoost unit, this system delivers exceptional stopping power and a consistent pedal feel for vehicles running large tires, one-ton axles, and full hydraulic steering.
Designed specifically for custom fabrication, this compact "short version" HydroBoost system saves valuable firewall and engine bay space while simplifying brake plumbing. Each HydroBoost unit is modified in-house with -8 AN flow and return fittings for improved reliability and easier integration into custom hydraulic steering systems.
Includes:
- Wilwood 1-1/8" Bore Compact Tandem Master Cylinder with brake fittings
- Wide Open Design Modified HydroBoost Unit with -8 AN Flow & Return Fittings
- Universal Steel Mounting Bracket
- Wide Open Design Adjustable Pedal Assembly
Optional Add-On:
- WOD HydroBoost Brake Light Switch Kit – Bolt-on adjustable brake light activation kit designed specifically for this HydroBoost system.
Specifications
| Specification | Details |
|---|---|
| Brake Assist Type | HydroBoost |
| HydroBoost Fittings | -8 AN Flow & Return |
| Master Cylinder | Wilwood Compact Tandem |
| Master Cylinder Bore | 1-1/8" |
| Finish | Black E-Coat |
| Weight | Approximately 3 lbs |
| Mount Flange Compatibility | 3.22"–3.40" |
| Mounting Bracket | Universal Steel |
| Pedal Assembly | Adjustable Front-to-Back |
| Application | Hydraulic-Assisted Brake Systems |
Fitment
Universal Fitment for Custom Fabrication
- Tube chassis builds
- Rock crawlers
- Rock bouncers
- Ultra4 race cars
- Prerunners
- LS engine swaps
- LT engine swaps
- Competition off-road vehicles
- Custom hydraulic steering systems
Installation Notes
- Designed for HydroBoost brake systems.
- Requires a compatible hydraulic power steering pump.
- Verify steering pump output, brake line routing, and pedal geometry before installation.
- Professional installation is recommended.
Tech Insight
Why choose HydroBoost instead of a vacuum booster?
HydroBoost systems use hydraulic pressure from the power steering pump instead of engine vacuum. This provides significantly more braking force and consistent pedal feel, especially on vehicles equipped with large tires, aggressive camshafts, or full hydraulic steering.
Why is this ideal for off-road vehicles?
Heavy rock crawlers and race vehicles often operate at low engine RPM or with aggressive camshafts that produce very little vacuum. HydroBoost maintains consistent brake assist regardless of engine vacuum, making it a proven solution for extreme off-road conditions.
What are the advantages of the Wilwood compact master cylinder?
The Wilwood Compact Tandem Master Cylinder reduces weight while saving valuable firewall space. Its compact design simplifies plumbing and makes installation easier in tight tube chassis, buggy, and LS swap engine compartments.
Who is this system designed for?
This HydroBoost kit is ideal for rock bouncers, Ultra4 race cars, custom tube chassis builds, LS and LT engine swaps, Jeeps running one-ton axles, and any off-road vehicle requiring maximum braking performance.
