Wilwood Tandem Aluminum Master Cylinder 7/8" Bore for Domestic Cars & Trucks

Wilwood Tandem Aluminum Master Cylinder — 7/8" Bore for Domestic Cars & Trucks Upgrade braking performance with the Wilwood tandem aluminum master cylinder, engineered for domestic cars and light trucks (mid-1960s to present). Machined from high-pressure die cast aluminum, this 7/8" bore unit delivers precise pedal feel, reliable hydraulic control, and significant weight savings—ideal for restorations, performance builds, and lightweighting projects. Bore Size: 7/8" (also available in 15/16") Mounting Flange Fit: 3.22"–3.40" to match common OE patterns Stroke & Ratio: 1.10" stroke with a 2:1 primary-to-secondary volume ratio for balanced brake bias Flexible Porting: Fluid outlet ports on both sides for versatile line routing and easier installation Finish Options: Plain, ball-burnished, or durable black e-coat Lightweight: Approximately 3 lbs — up to 75% lighter than cast-iron OE units Included Hardware: Manual-application pushrod; compatible with Wilwood proportioning and retrofit kits Benefits: improved brake response, consistent pedal modulation, reduced unsprung mass, and long-lasting corrosion resistance. Precision machining ensures dependable operation under repeated use and easy integration into factory or modified braking systems. For complete integration, consider Wilwood combination proportioning valve kit PN 260-13190 or retrofit kit PN 220-13189. Choose Wilwood for proven engineering, optimized brake balance, and performance-focused reliability.