Wilwood 261-13270 Tandem Master Cylinder Kit with Proportioning Valve - 1-1/8

The Wilwood 261-13270 is a complete tandem master cylinder kit designed primarily for power brake applications with vacuum or hydraulic assist systems. This comprehensive kit includes the 1-1/8" bore aluminum tandem master cylinder, combination proportioning valve, mounting bracket, stainless steel fluid tubes, and all necessary mounting hardware for a complete bolt-on installation.

Key Features:

• 1-1/8" bore tandem aluminum master cylinder with bare aluminum finish
• Weighs only 3 lbs—75% lighter than cast iron OE master cylinders
• Machined from high-pressure die castings for strength and durability
• Slotted flange mounting compatible with popular OE bolt patterns including Chrysler, Corvette, GM, and Ford Mustang
• Combination proportioning valve maintains full isolation between front and rear fluid circuits
• Black E-coated combo valve and bracket for corrosion resistance and performance appearance
• Precision-bent stainless steel fluid tubes with preinstalled plated steel tube nuts
• Stainless steel button head fasteners for rust-free, long-lasting installation
• Compatible with both manual and power brake system applications

This master cylinder kit represents the latest refinements in brake pressure actuation and fluid control. The combination proportioning valve simplifies wiring and brake proportioning adjustments on vehicles with custom brake systems, while the complete kit design eliminates the need to source individual components separately. The tandem chamber design provides reliable dual-circuit safety with independent front and rear hydraulic circuits.