Description
The Wilwood Part Number 260-8556-P high volume tandem aluminum master cylinder is engineered for serious braking performance in a variety of automotive applications. Available in a 1-1/8 inch bore size, this master cylinder is primarily designed for power brake systems utilizing vacuum or hydraulic assist, making it suitable for modern and classic vehicles from the mid-1960s to present. Crafted from high-pressure die cast aluminum, it offers a lightweight alternative to traditional cast iron cylinders, weighing only 3 pounds and providing a 75% weight reduction for improved vehicle handling and response. The master cylinder features fluid outlet ports on both sides of the bore and a stroke of 1.10 inches, with a primary-to-secondary chamber volume ratio of 2:1, ensuring balanced and efficient brake fluid distribution.
Features:
- Bore Size: 1-1/8 inch, optimized for power brake applications
- Material: High-pressure die cast aluminum for durability and weight savings
- Finish Options: Plain, ball burnished, and black e-coat to suit different aesthetic needs
- Mounting Flange: Fits standard flanges from 3.22 inches to 3.40 inches, compatible with most domestic vehicles
- Fluid Outlet Ports: Located on both sides of the bore for flexible installation
- Stroke: 1.10 inches, ensuring effective brake pedal feel and response
- Weight: Only 3 pounds, offering significant weight savings over traditional cast iron master cylinders
- Includes optional combination proportioning valve kit (PN 260-13190 or 220-13189) with brackets and stainless lines for seamless integration









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