7/8″ Bore Compact Remote Side Mount Master Cylinder by Wilwood

The Wilwood 260-12387 master cylinder (part number 260-12387) — 7/8″ bore. Wilwood’s Compact Remote Combination Master Cylinder, commonly called the “shorty” master cylinder, is only 3.375″ long — about the size of a roll of quarters. This version carries integral side mount lugs instead of a mounting flange, and is available in bore sizes from 5/8″ to 1.00″.

• 7/8″ bore, 0.600 in² piston area, 1.12″ stroke
• Single Outlet — 1/8-27 NPT outlet
• Aluminum / Plastic, Black E-coat finish
• Remote reservoir, 10.0 or 7.0 oz
• Overall length 8.84″, flange to end 3.37″

Wilwood 260-12387 Master Cylinder Specifications

Other Bore Sizes in This Series

Every bore in the Compact Remote Side Mount Master Cylinder range:

Recommended Components

• Same 7/8″ bore, Compact Remote Flange Mount Master Cylinder (260-10374).
• Same 7/8″ bore, Compact Remote Flange Mount Master Cylinder with Banjo Outlet (260-13621).
• Same 7/8″ bore, Compact Remote Master Cylinder with Aluminum Reservoir (261-16839-.88).
• Same 7/8″ bore, Compact Remote Side Mount Master Cylinder with Banjo Outlet (260-13624).
• Replacement 10 oz reservoir: Compact Remote Master Cylinder Reservoir, 10 oz. by Wilwood.
• Replacement 7 oz reservoir: Compact Remote Master Cylinder Reservoir, 7 oz. by Wilwood.
• Reservoir inlet adapter: Compact Remote Master Cylinder Reservoir Inlet Adapter by Wilwood.
• Reservoir hose clamp: Reservoir Hose Clamp, 1/2 Inch by Wilwood.
• Bench bleed before installation: Master Cylinder Bench Bleeding Kit by Wilwood.
• Rebuild it with the 7/8″ Bore Compact Remote Master Cylinder Rebuild Kit by Wilwood (260-10516).
• Browse the full Wilwood master cylinder range.