Vehicle Fitment

  • Universal application for many chassis including Honda, Nissan, Mazda, Mitsubishi, Subaru, Toyota/Lexus, BMW, Porsche, VW (check bolt-pattern compatibility)

Fitment Notes

  • Includes firewall plate, Wilwood 7/8- master cylinder, -3AN output fitting, pedal rod clevis adapter
  • Designed to replace OEM brake booster and master cylinder for improved pedal feedback and reduced weight (~1.4-lb)
  • Not compatible with factory brake lines—requires dedicated brake line relocation kit or bespoke AN-fitting plumbing
  • Pedal ratio must match chassis; certain chassis (e.g., Subaru/FR-S/BRZ) include push-rod extender

Features

  • Direct-mount aluminum firewall bracket and laser-cut plate
  • Wilwood 7/8- bore master cylinder engineered for OEM pedal leverage
  • Single-piston design yields consistent, controllable pedal feel (10-80% braking simulates power assistance)
  • Pedal feel tuned for smooth modulation with strong initial bite
  • Compact kit reduces 20-+ lbs and tightens engine bay packaging
  • Chassis-specific push-rod extension options provided where needed
  • Manufactured in the USA; valued by high-G road race and drift applications
  • Lifetime limited warranty on hardware and MC

Specifications

  • Kit Type: Brake Booster Eliminator Kit (single-piston manual brake conversion)
  • Master Cylinder Bore: 7/8- (Wilwood single-output)
  • Mounting Plate: aluminum firewall plate with pedal adapter specific to chassis
  • Fitment: Universal (Honda, Nissan, Toyota/Lexus, Subaru, BMW, Porsche, VW); verify 4-bolt master cylinder bolt-pattern
  • Weight: approx.-1.38-lb total
  • Warranty: Chase Bays Lifetime limited

Included Components

  • 1- Laser-cut firewall mounting plate
  • 1- Wilwood 7/8- single-output master cylinder
  • 1- Pedal rod adapter clevis
  • 1- -3AN 90° output fitting
  • Mounting hardware kit and instructions

Product Description

The Chase Bays CB-U-BBE Single-Piston Brake Booster Eliminator is a lightweight conversion kit engineered to replace the OEM brake booster and master cylinder on a wide variety of performance chassis. Ideal for race or track-driven builds, it delivers a predictable and consistent brake pedal feel with excellent modulation from 10-80% pressure, while eliminating over-assist variability inherent in vacuum boosters.

The kit includes a precision-fit aluminum firewall plate and pedal clevis adapter for matching your chassis’ pedal ratio, plus a Wilwood 7/8- master cylinder. Push-rod extenders or relocation plates are available for chassis with deeper pedal boxes (e.g., FR-S, Subaru). OEM brake lines are not compatible—with single-output MC, you’ll need a Chase Bays brake line relocation kit or custom AN plumbing.

Manufactured in the USA with motorsport-grade materials and backed by Chase Bays’ lifetime warranty, the CB-U-BBE provides consistent braking performance and saves over 20-lbs from the front end—making it a popular choice for builders requiring precision and control in track environments.



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