Wilwood 260-15520-BK Compact Tandem Master Cylinder 7/8" Bore Black with Pushrod

The Wilwood 260-15520-BK Compact Tandem Master Cylinder is a high-performance, aluminum brake master cylinder engineered for classic Ford Mustang applications. Featuring a 7/8" bore and a durable black e-coat finish, this unit ships with the correct pushrod and eyelet for a direct-fit installation on 1964–1972 Ford Mustang factory brake pedal assemblies.

Machined from high-pressure die-cast aluminum, this master cylinder is designed primarily for manual (non-power) brake systems. Its slotted mount flanges span 3.22" to 3.40", matching the factory manual master cylinder mounting pattern on 1964–1972 Mustangs. Fluid outlet ports are provided on both sides of the bore, offering maximum flexibility in brake line routing.

Key Features:

• 7/8" bore diameter for optimal pedal feel and brake pressure in manual applications
• 1.10" stroke with a 2:1 volume ratio between primary and secondary chambers
• Weighs only 3 lbs — approximately 75% lighter than traditional cast iron OEM master cylinders
• Black e-coat finish for corrosion resistance and clean appearance
• Includes correct pushrod and eyelet for 1964–1972 factory brake pedal compatibility
• Fluid outlet ports on both sides of the bore for flexible brake line routing
• Compatible with mount flanges from 3.22" to 3.40", matching factory 1964–1972 manual master cylinder mounts
• Machined from high-pressure die-cast aluminum for strength and lightweight performance

A combination proportioning valve retrofit kit is also available separately for use with this master cylinder: PN 260-14248 (left-hand outlets) or PN 260-15667 (right-hand outlets), each including brackets and stainless brake lines.