SKU: WIL260-3881
UPC: 889545067620
MPN: 260-3881
The Wilwood 3/4 Rebuild Kit (MPN 260-3881) is an essential maintenance component for anyone serious about brake system reliability and performance. Designed specifically for Wilwood master cylinders with a 3/4-inch bore, this rebuild kit allows you to restore your brake hydraulic system to factory specifications without replacing the entire master cylinder assembly. Whether you're a dedicated track enthusiast, street performance builder, or weekend mechanic, having the correct rebuild kit on hand ensures you can address brake fluid contamination, seal degradation, or performance loss quickly and cost-effectively.
This complete rebuild kit contains all critical internal components: a precision-engineered piston, OEM-grade seals, a dust boot to protect against contamination, and a snap ring for secure assembly. The 3/4-inch bore specification is engineered to deliver consistent brake modulation and pedal feel across a wide range of vehicle applications and brake line pressures. Wilwood's attention to seal compound quality and piston tolerances ensures that rebuilt cylinders maintain their hydraulic integrity and responsiveness, which is critical when you're depending on your brakes during spirited driving or competition use. The compact package (weighing just 0.25 lbs) contains everything needed to fully service your master cylinder without requiring partial replacements or sourcing components separately.
This rebuild kit is ideal for custom brake system builders, vintage vehicle restorers, and performance shops that standardize on Wilwood hydraulic components. If you've owned your vehicle long enough to experience brake fluid degradation or notice a soft or sinking pedal, the Wilwood 3/4 Rebuild Kit offers a proven, cost-efficient solution before investing in a new master cylinder. Installation requires basic mechanical skill and attention to cleanliness during assembly; always bench-bleed the cylinder after rebuild and use fresh DOT 3 or DOT 4 brake fluid (per your system specification) to maximize component life and braking performance.
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