Wilwood 260-12382 Compact Remote Side Mount Master Cylinder Bore - 1.00

The Wilwood 260-12382 is a Compact Remote Side Mount Master Cylinder engineered for high-performance street, racing, and specialty vehicle applications where space is at a premium. With a 1.00-inch bore and the output capacity of a full-size master cylinder packed into an ultra-compact body, this unit delivers reliable, consistent braking force without compromise.

The ultra-short 3.37-inch compact body provides 2.16 inches of additional clearance between the mounting boss and the fluid outlet — a critical advantage in tight engine bays and custom chassis builds. Rather than a traditional mounting flange, the body features integral side mounting lugs on 3.00-inch centers, further maximizing its ability to fit in confined spaces.

Key Features:

• 1.00-inch bore with 0.780 in² piston area
• 1.12-inch piston stroke meets or exceeds the stroke capacity of most full-size master cylinders
• 0.87 cu. in. fluid volume per stroke
• 1/8-inch NPT fluid outlet port positioned at the top radius of the cylinder bore to reduce trapped air during bleeding
• 11/16-20 internal threads on fluid inlet for custom reservoir arrangements
• Integral side mounting lugs with 3.00-inch center-to-center spacing — no traditional mounting flange
• Black E-Coat finished aluminum body for long-lasting corrosion resistance
• Compatible with direct-mount or remote fluid reservoirs (reservoir kit included)

The black E-Coated aluminum construction resists corrosion and provides a clean, durable finish suitable for show and competition use alike. This master cylinder is ideal for club sport racers, open-wheel cars, custom builds, and any application demanding full braking performance in a space-saving package.