Universal Hydraulic Clutch Master Cylinder Rod System Transfer Pump Compatible With Motorcycle Hydraulic Clutches This hydraulic clutch master cylinder rod system is designed for use with motorcycle hydraulic clutches.It functions as a transfer pump to assist in bleeding and refilling the hydraulic clutch system.The unit features a large filler port to facilitate visual inspection of brake fluid during filling.Tubing connects to the threaded port (M10x1.25 mm) without fully tightening to allow air to escape through side holes.The reservoir is positioned higher than the clutch master cylinder.Approximately 10 manual pump strokes are performed, followed by a 5–10 minute rest period to allow air bubbles to rise.Brake fluid flows from the unsecured port when circulation is established; the port is then tightened to complete the air removal process.To confirm successful bleeding, depress the pump lever toward the body until resistance is felt and hold.A consistent lever travel of approximately 3 cm at the tip—without bottoming out—indicates proper system evacuation.The rod is fully extended before installation.The clutch lever must be released and the rod fully stretched during mounting.Main material: Aluminum.Overall length: 140 mm.Thread size: M10x1.25 mm.Fitment: Compatible With Motorcycle Hydraulic Clutches.Package includes: 1 x Motorcycle hydraulic clutch brake pump.This product is a replacement part compatible with motorcycle hydraulic clutch systems.Brand names and model references are used solely to indicate compatibility and are not intended to imply affiliation with or endorsement by the respective manufacturers. Compatibility Note: This is a third-party replacement component.Brand and model references are included solely to indicate fitment.