9in Dual Diaphram Boostr Black

The 9in Dual Diaphragm Boostr Black from TUFF-STUFF is a precision power brake booster engineered for classic Chevrolet Corvette restoration and high-performance brake system upgrades from 1968 to 1982. Built for enthusiasts and professional mechanics who demand authentic factory-style replacement or upgraded braking performance, this dual diaphragm booster provides superior pedal feel and stopping power compared to aging original equipment. Whether you're rebuilding a vintage Corvette or upgrading an existing system, this booster restores confidence at the pedal while maintaining OEM-correct fitment and aesthetics.

Constructed from high-strength steel with a durable black powder coat finish, the 9in dual diaphragm design delivers consistent brake assist across the full pedal stroke—critical for street driving, autocross, and spirited road work. The dual diaphragm architecture amplifies vacuum signal efficiency, reducing the effort required to achieve maximum braking force while maintaining smooth modulation and pedal linearity. The Y7 rod configuration ensures correct master cylinder engagement and pressure distribution. At 10.65 lbs and measuring 13.3 x 12 x 13.9 inches, it fits the tight engine bay constraints of classic Corvettes without modification.

This booster is the go-to choice for Corvette owners, restoration shops, and vintage car specialists seeking OEM-compatible replacement or performance enhancement. Installation requires basic mechanical skill and hand tools; mounting interfaces directly to the factory firewall with no fabrication needed. Proper vacuum supply and master cylinder sizing are essential for optimal performance—ensure your engine's vacuum reserve meets the booster's requirements and verify master cylinder bore compatibility before installation. Ideal for both driver-quality restorations and track-ready builds, this proven design combines reliability with authentic appearance.