OBP Compact Push Type Master Cylinder, 0.70

Brand: Optimum Balance Products (OBP)

The FC series compact master cylinders from obp Motorsport are the smallest we carry, measuring just 2 3/8" long! The mounting flange has the standard 2- bolt (5/16" holes, 2 1/4" center-to-center) but the flange is rotated 60 degrees for a more compact installation. Perfect for pedal boxes with angled mounting holes.

Despite the ultra-compact size, this 7/10" bore master cylinder retains an impressive 1.03" (26.2mm) stroke, displacing up to 6.5ml (0.397 CI) of fluid with a full stroke. The 7/16-20 inlet port allows remote-mount or direct-mount reservoirs, and the standard 3/8-24 outlet port and 5/16-24 pushrod thread make these a direct replacement for conventional single-outlet master cylinders from Girling, AP/Lockheed, and many more. Sold individually.

Bore Size: 0.70" (7/10", 17.8mm)
Inlet Port: 7/16-20 (same as Girling)
Outlet Port: 3/8-24 (same as Girling, AP/Lockheed, Tilton, etc)
Pushrod Thread: 5/16-24 (same as Girling, AP/Lockheed, Tilton, Wilwood, etc)
Mounting Holes: 2x 5/16", 2.25" center-to-center (same as Girling, AP/Lockheed, Tilton, Wilwood, etc), angled 60° from vertical
Piston Stroke: 26.2mm / 1.03" (about 1/4" less than Tilton)
Maximum Fluid Displacement: 6.5ml / 0.397 CI (1.2ml / 0.08 CI more than the 0.625" bore size and 1.04ml / 0.063 less than the 0.75" bore size)