Wilwood High Volume Tandem Master Cylinder - 1 1/8in Bore

This Wilwood High Volume Tandem Master Cylinder features a 1 1/8 inch bore and is constructed from aluminum. It's designed to work with power brake systems, whether they use vacuum assist or hydraulic assist. The master cylinder is built to fit common domestic car and truck mount flanges, typically found from the mid-1960s to the present, with measurements ranging from 3.22 to 3.40 inches. You'll find fluid outlet ports conveniently located on both sides of the bore.

Wilwood machines these master cylinders from high-pressure die castings, resulting in a lightweight component that weighs only 3 pounds. This offers a significant weight saving, about 75% less than many OE cast iron master cylinders. The stroke is set at 1.10 inches, and it has a volume ratio of 2:1 between the primary and secondary chambers, which helps ensure consistent brake performance. This is a well-built part for those upgrading or rebuilding their braking system.

For those looking to complete their setup, Wilwood offers a combination proportioning valve kit, available under part numbers 260-13190 or 220-13189 for a retrofit kit, which includes brackets and stainless lines specifically designed to work with this master cylinder.