Wilwood One-Inch High Volume Master Cylinder Internal Repair Kit

A one-inch piston size separates this rebuild set from the smaller High Volume master kits. It supplies service components for the single-outlet integral-reservoir cylinder and requires reuse of a suitable original housing. A disc brake manufacturer based in Camarillo, California, Wilwood Engineering was founded by Bill Wood in 1977. It designs and manufactures calipers, rotors, brake lines, fittings, valves and master cylinders for street-performance, motorsport and specialized systems. The chosen service part must agree with the complete system's connections, dimensions and operating demands.

Technical Details

• Manufacturer part number: 260-6900
• Component: Cylinder rebuild/service kit; replacement housing not included
• Service bore: 1.00"
• Verified service contents: Piston/seal, spring, washers, retaining ring and boot
• Package confirmation: Exact summary includes pushrod and lid gasket; DS412 does not mark those items as rebuild-kit contents

Fitment & Compatibility

The specified master is Wilwood 260-6766. DS-412 identifies the piston/seal, spring, washers, retaining ring and boot as rebuild items; its markings omit the pushrod and lid gasket that the product summary includes. Confirm that package detail before ordering those items separately.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS412 instructions and specifications
• Wilwood FL162 instructions and specifications

With more than 20 years of experience, PMB Performance can help compare the specified part with the assembly you are servicing. Include the existing part identification and relevant hydraulic dimensions.