Leed Master Cylinder and Booster - 1.125 in Bore - Dual Integral Reservoir - 7 in OD - Single Diaphragm - Proportioning Valve - Gold Zinc Plated - GM A-Body 1955-68 BR20065 The RZ-56 Air includes minimal

The RZ-56 Air includes minimal front venting and a Top Air Accessory to run Forced Air

Weight reduction pockets

5 in Length x 7 in Wide x 5 in Height

this rarely affects header or chassis fitment

Leed Master Cylinder and Booster - 1.125 in Bore - Dual Integral Reservoir - 7 in OD - Single Diaphragm - Proportioning Valve - Gold Zinc Plated - GM A-Body 1955-68 BR20065 The RZ-56 Air includes minimalProduct Description: Master Cylinder and Booster 1. 125 in Bore Dual Integral Reservoir 7 in OD Single Diaphragm Proportioning Valve Steel Gold Zinc Plated GM A Body 1955 68 The LEED Brakes company carries a full line of drum to disc brake conversion kits, power brake booster kits, master cylinder kits and many hard to find brake accessories for your Muscle Car, Classic Truck and Street Rod. Vehicle Applications: 1955 1957 Chevrolet One Fifty Series,