Wilwood 261-15523-BK Compact Tandem Master Cylinder with Proportioning Valve

Upgrade your vehicle’s braking system with the Wilwood 261-15523-BK compact tandem master cylinder. Designed for performance-oriented applications, this master cylinder features a 0.938-inch bore and 1.100-inch stroke to provide responsive hydraulic control and consistent brake pedal feel. Its integral reservoir simplifies installation by combining fluid storage and master cylinder functionality in a compact assembly.
The Wilwood 261-15523-BK includes an integrated proportioning valve to help balance front and rear braking force. This feature can improve brake control and help reduce premature rear-wheel lockup when properly adjusted for the vehicle and driving conditions. The tandem design supports separate hydraulic circuits for added braking-system reliability, making it a practical choice for street, custom, and performance builds.
Constructed from lightweight aluminum and finished with durable black paint, this Wilwood master cylinder offers strength, corrosion resistance, and a clean appearance. The compact housing is well suited for installations where available space is limited, while the integral reservoir helps reduce the number of separate components required. Verify bore size, mounting configuration, hydraulic connections, pedal ratio, and vehicle compatibility before installation.

Features:

• 0.938-inch bore for responsive hydraulic performance

• 1.100-inch stroke for consistent brake actuation

• Tandem master cylinder design with separate hydraulic circuits

• Integral reservoir simplifies installation and packaging

• Built-in proportioning valve helps balance front and rear braking force

• Lightweight aluminum construction

• Durable black-painted finish

• Compact design for space-conscious applications