Wilwood's Compact Combination Master Cylinders have been designed for limited space applications requiring the output capacity of a full size master cylinder. The ultra-short 3.37”compact body provides a full 1.12” of piston stroke that meets or exceeds the stroke capacity of most full size cylinders. This Master Cylinder is a 1in bore. Wilwood's Compact Combination Master Cylinders have been designed for limited space applications requiring the output capacity of a full size master cylinder. The ultra short 3.37”compact body provides 2.16” of additional clearance between the mounting flange and the fluid outlet. A full 1.12” of piston stroke meets or exceeds the stroke capacity of most full size cylinders. With 1/8” NPT fluid outlet port located at the top radius of the cylinder bore, reduces the chances for trapped air. Enhanced fluid inlet port allows mounting of the standard reservoir included in kit and also contain 11/16-20 internal threads for custom reservoir arrangements. The black E-Coated aluminum body resists corrosion and maintains a durable long lasting finish.