Wilwood High Volume Tandem Master Cylinder – 1 1/8 inch bore, black e-coat finish

Description

The Wilwood Part Number 260-8556-BK High Volume Tandem Master Cylinder offers reliable performance for a variety of automotive brake systems. Constructed from high-pressure die cast aluminum, this master cylinder is designed to provide durability while significantly reducing weight, weighing only 3 pounds—representing a 75% weight savings over traditional cast iron units. Its black e-coat finish offers corrosion resistance and a sleek appearance suitable for both restoration and high-performance applications. The 1-1/8 inch bore size is primarily intended for power brake systems, making it ideal for vehicles equipped with vacuum or hydraulic assist systems. The master cylinder features fluid outlet ports on both sides of the bore, ensuring flexible installation options across different vehicle configurations. The stroke length is set at 1.10 inches, with a fluid volume ratio of 2:1 between primary and secondary chambers, providing a balanced and responsive brake pedal feel. It is designed to fit standard mount flanges ranging from 3.22 inches to 3.40 inches, common for most domestic cars and trucks from the mid-1960s to present. The master cylinder also includes a pushrod for manual applications with a 7/8 inch bore option, and a pushrod is not included with the 1 inch bore version, allowing customization based on specific system requirements. For enhanced braking performance, Wilwood offers a compatible combination proportioning valve kit, which includes brackets and stainless steel lines specifically engineered for use with these master cylinders, reference PN 260-13190 or 220-13189 for retrofit kits. This master cylinder is suitable for various automotive applications, combining lightweight design, durability, and versatility to meet the demands of both vintage restorations and modern high-performance builds.

Features:

• Constructed from high-pressure die cast aluminum for durability and weight savings

• Available in 1.00 inch and 1-1/8 inch bore sizes to suit manual and power brake systems

• Black e-coat finish provides corrosion resistance and a sleek appearance

• Fluid outlet ports located on both sides of the bore for flexible installation

• Designed to fit standard mount flanges from 3.22 inches to 3.40 inches

• Stroke length of 1.10 inches with a 2:1 volume ratio between primary and secondary chambers

• Lightweight design weighing only 3 pounds for easier installation and handling

• Includes a pushrod for manual applications with the 7/8 inch bore option

• Compatible with Wilwood’s proportioning valve kits for optimized brake performance