Aluminum Tandem Master Cylinder – 1-1/8 Inch Bore – Bare Finish

Tandem outlet aluminum master cylinder designed primarily for power brake applications using vacuum assist or hydraulic assist systems. This version features a bare aluminum finish, making it ideal for custom finishing or a raw, mechanical appearance.

The 1-1/8 inch bore provides increased fluid volume suited for power-assisted brake systems. An integral dual reservoir supplies independent front and rear brake circuits, while outlet ports on both sides of the bore allow flexible brake line routing. The compact, lightweight aluminum body offers a significant weight reduction compared to traditional cast-iron master cylinders.

Designed to fit common domestic mounting flanges measuring approximately 3.22 inches to 3.40 inches, this master cylinder is compatible with many cars and trucks from the mid-1960s to present. Stroke is set at 1.10 inches with a 2:1 volume ratio between the primary and secondary chambers.

• Tandem outlet master cylinder
• 1-1/8 inch bore
• Aluminum construction
• Bare finish
• Integral reservoir
• Reservoir capacity: 8.0 oz / 4.8 oz (14.4 / 8.7 cu in)
• Designed for power brake applications
• Lightweight design, approximately 3 lb

Dimensions
• Bore size: 1-1/8 in
• Piston area: 0.970 in²
• Stroke: 1.10 in
• Overall length: 8.76 in
• Flange to end length: 8.15 in

Outlet ports
• Outlet 1: 1/2-20
Compatible fittings: 3/8-24 IF or 1/2-20 IF
• Outlet 2: 1/2-20
Compatible fittings: 3/8-24 IF or 9/16-18 IF