Upgrade your GM AFX body vehicle with a LEED Brakes 8" Dual Diaphragm Chrome-Plated Power Brake Booster, Master Cylinder, and Adjustable Proportioning Valve Combo. This 8-inch power booster is hand-polished before receiving a high-quality chrome finish for a durable, show-ready appearance. Designed to mount directly to your factory firewall, this system delivers reliable brake assist with a clean, factory-style fit and straightforward bolt-on installation.
This combo kit also includes a new 1-1/8" bore master cylinder and an adjustable proportioning valve configured to work with front disc/rear drum or four-wheel disc brake applications, providing versatility for a wide range of classic GM brake setups.
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Upgrade your GM AFX vehicle with this 8" Dual Diaphragm chrome-plated power brake booster kit from LEED Brakes. This complete system includes a 1-1/8" bore master cylinder and adjustable proportioning valve engineered for 4-wheel disc brake applications. The 8" booster is hand-polished before receiving a durable chrome-plated finish for a clean, high-quality under-hood appearance. Designed to mount directly to the factory firewall, this kit provides a straightforward installation with proper pedal geometry.
The included cast iron master cylinder features a 1-1/8" bore and dual reservoir design to deliver consistent hydraulic volume and balanced braking performance for 4-wheel disc systems. The adjustable proportioning valve allows fine-tuning of rear brake pressure for proper front-to-rear bias.
Designed for GM AFX vehicles from 1964–1974 including Camaro, Chevelle, Nova, Oldsmobile Omega, Buick Apollo, Pontiac Ventura, and related platforms.
All LEED Brakes booster and master cylinder assemblies are preset before shipping. Watch this short video to learn how to properly measure pushrod depth and how to quickly test your measuring tool for accuracy.
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