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

This Wilwood tandem master cylinder features a 1 1/8 inch bore, specifically chosen for its ability to handle the fluid volume needed in power brake applications, whether you're using vacuum or hydraulic assist. It's machined from high-pressure die castings, making it a lightweight component at just 3 pounds – that's about a 75% weight savings compared to typical cast iron master cylinders. This makes it a solid choice for projects where reducing overall weight is a goal.

The design accommodates common domestic car and truck mounting flanges, ranging from 3.22 to 3.40 inches, which covers most vehicles from the mid-1960s to the present day. You'll also find fluid outlet ports conveniently located on both sides of the cylinder, offering flexibility during installation. The internal design includes a stroke set at 1.10 inches and a 2:1 volume ratio between the primary and secondary chambers, ensuring consistent brake pressure.

For a complete brake system upgrade, Wilwood offers a combination proportioning valve kit (PN 260-13190 or 220-13189 for a retrofit kit) that includes brackets and stainless steel lines specifically designed to work with this master cylinder.