11" Universal Single Diaphragm Brake Booster Chrome They are heat-treated and threads

They are heat-treated and threads are rolled to provide up to ten times more fatigue strength

The TorqueWorm is a torque biasing 6 pinion gear type limited-slip unit

Step up to the high-rpm power of an open plenum with Speedmaster HiRise intake manifolds

Speedmaster ribbed aluminum valve covers are the perfect fit for your engine

Available for center hung fuel bowls

11" Universal Single Diaphragm Brake Booster Chrome They are heat-treated and threadsSpeedmaster brake boosters are the perfect addition to your street rod or custom application. Have you lost that vacuum feeling? If you're pushing your brake to the floor, it may be that your brake booster needs replaced, and Speedmaster has brake boosters for you.