Rebuild Kit 1-1/6in Tandem Master Cylinder

The Wilwood Rebuild Kit 1-1/16 inch Tandem Master Cylinder (Part No. 260-4896) is a complete internal service pack designed for maintenance and restoration of Wilwood tandem master cylinders. This rebuild kit contains all wear-prone internal components—piston, seals, snap ring, and spring assembly—necessary to restore hydraulic braking systems to original specification and performance.

The 1-1/16 inch bore diameter specification matches Wilwood's tandem master cylinder applications, making this kit essential for systems requiring dual-circuit brake pressure regulation. Over time, master cylinder seals degrade from thermal cycling, moisture intrusion, and normal hydraulic fluid breakdown, resulting in reduced pedal firmness and increased stopping distance. Replacing internal wear components restores seal integrity and system responsiveness without requiring full cylinder replacement. The kit's comprehensive component set—including both primary and secondary piston seals, retaining snap ring, and return spring—ensures complete hydraulic renewal in a single service interval.

This rebuild kit is intended for owners and technicians maintaining high-performance braking systems in street vehicles, track applications, and custom builds where tandem master cylinders provide independent circuit redundancy. DIY rebuilds using this kit reduce downtime and cost compared to purchasing replacement cylinders, while allowing owners to service systems on their own schedule. Proper rebuild procedure requires familiarity with brake system design, careful component handling to prevent contamination, and correct assembly sequencing. Wilwood's tandem design is favored in applications demanding fail-safe braking architecture where loss of pressure in one circuit does not compromise stopping power entirely.