Performance Machine Radial Brake Master Cylinder for Harley Race driven Performance Machine Radial brake master cylinders feature built in reservoirs which deliver stunning performance and style for any bike. With fully adjustable levers, machined fluid reservoirs and clearance for stock switch housings, this versatile system will greatly improve both look and feel of your controls. Features Race driven radical mount technology increase braking leverage Compatible with OEM switch housings and CAN bus wiring Twist adjustment knob easily modifies lever reach distance Over 0.5 of lever adjustment Lever designed for a comfortable and smooth feel 11/16 bore for dual disc CNC machined from billet aluminum 1 clamping diameter Mirror mounts, brake light and clutch safety switch kits sold separately