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

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

Master Cylinder Features:

• Machined from high-pressure die cast aluminum for exceptional strength and weight savings
• Weighs only 3 lbs—75% lighter than most cast iron OE master cylinders
• 1-1/8" bore size for power brake applications
• Ball burnished finish for corrosion resistance and professional appearance
• Slotted flange mounting fits popular OE bolt patterns including Chrysler, Corvette, GM, and Ford Mustang
• Tandem chamber design provides independent front and rear brake circuits for maximum safety

Complete Kit Includes:

• Combination proportioning valve for simplified brake bias adjustment
• Black E-coated mounting bracket and valve assembly
• Precision-bent stainless steel fluid tubes with preinstalled plated steel tube nuts
• Stainless steel button head mounting fasteners
• All hardware required for bolt-on installation

The combination proportioning valve maintains full isolation between front and rear fluid circuits while substantially simplifying wiring and brake proportioning adjustments on custom brake systems. The stainless steel construction and premium finishes provide long-lasting durability and rust-free performance for years of reliable service.