Wilwood 261-13269-P 1-Inch Tandem Aluminum Brake Master Cylinder Kit with Proportioning Valve

The Wilwood 261-13269-P is a complete brake master cylinder kit featuring a 1-inch bore tandem aluminum master cylinder, combination proportioning valve, mounting bracket, stainless steel fluid tubes, and all necessary mounting hardware. This comprehensive kit is designed for both manual and power-assisted brake system applications.

Lightweight Aluminum Construction:

Machined from high-pressure die castings, this master cylinder weighs only 3 pounds—a 75% weight savings compared to most cast iron OE master cylinders. The ball burnished finish provides excellent corrosion resistance and a performance appearance.

Key Features:

• 1-inch bore tandem chamber design for reliable dual-circuit brake operation
• Slotted flange mounting fits 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 proportioning valve and bracket for durability and corrosion protection
• Precision-bent stainless steel fluid tubes with pre-installed plated steel tube nuts
• Stainless steel button head fasteners for rust-free installation
• Ball burnished finish on master cylinder body
• Compatible with manual and power brake systems

What's Included:

• 1-inch bore tandem aluminum master cylinder
• Combination proportioning valve assembly
• Mounting bracket
• Stainless steel fluid tubes
• Complete mounting hardware

Installation Notes:

The slotted flange design allows for simple bolt-on installation to many OE mounting locations. The kit substantially simplifies brake system setup and proportioning adjustments on vehicles with custom brake systems. Master cylinder does not include a pushrod—use existing pushrod from your application. Simply bolt the components together, connect brake lines, bleed the system, and installation is complete.

This kit represents the latest refinements in brake pressure actuation and fluid control, making it an ideal upgrade for performance and custom brake system applications where weight savings, reliability, and adjustability are priorities.