8-Inch Chrome Dual Power Brake Booster with 1-1/8-Inch Bore Master Cylinder with Chrome Lid and Adjustable Valve for GM AFX

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. Compatible GM AFX Models 1964–1967 Buick Special 1964–1967 Chevrolet Malibu 1964 Oldsmobile Cutlass / 442 1964–1972 Oldsmobile Vista Cruiser 1964–1970 Oldsmobile F85 1964–1970 Pontiac Tempest / GTO 1964–1972 Pontiac LeMans 1966–1972 Pontiac Grand Prix 1967–1969 Pontiac Firebird 1967–1969 Chevrolet Camaro 1964–1972 Chevrolet Chevelle 1968–1972 Buick GS / Skylark / Sportwagon 1968–1972 Chevrolet Nova 1969–1972 Chevrolet El Camino 1970–1972 Chevrolet Monte Carlo 1968–1972 Oldsmobile Cutlass / Cutlass Supreme 1970–1972 Oldsmobile Custom Cruiser 1968–1971 Oldsmobile Toronado 1971–1972 Pontiac Ventura 1973–1974 Buick Apollo 1964–1974 GM AFX 8" Dual Diaphragm Chrome Power Brake Booster Kit – 4-Wheel Disc Specifications Brake Application: 4-wheel disc Master Cylinder Bore Size: 1-1/8 inch Master Cylinder Design: Dual bowl Master Cylinder Material: Cast iron Master Cylinder Finish: Natural Reservoir Included: Yes, cast iron Master Cylinder Cap Included: Yes Brake Booster Type: Dual diaphragm Brake Booster Diameter: 8 inches Brake Booster Material: Steel Brake Booster Finish: Chrome-plated Brake Pedal Rod Extension Included: Yes Mounting Hardware: Uses original Quantity: Kit LEED Brakes Pushrod Measuring Tool PSA Video 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. Click here to learn more about why LEED Brakes adds this warning to their products.