GMA Engineering 9/16 Inch Bore Master Cylinder Clutch Lever for 1-Inch Handlebars

GMA Engineering 9/16 Inch Bore Master Cylinder Clutch Lever for 1-Inch Handlebars

Step up to hydraulic clutch control on your custom build with an assembly that delivers the smooth, consistent engagement feel that cable systems simply cannot match. Whether you are building from the frame up or converting an existing setup, this American-made assembly gives your left hand the confidence and control to match the rest of your build.

Key Features

• 9/16-inch bore hydraulic clutch master cylinder — purpose-matched for smooth, progressive clutch engagement on custom builds
• Left-hand mounting orientation — designed specifically for clutch side handlebar installation
• CNC-machined construction with a clean, low-profile design built for custom and builder applications
• Complete assembly includes mounting clamps and lever — ready to install out of the box
• Available with or without an integrated switch kit to suit your build configuration
• Switch kit includes three momentary switches with buttons and dedicated switch housing
• Switch wiring supports internal or external routing for maximum handlebar layout flexibility
• Made in the U.S.A.

Technical Specifications

• Bore Size: 9/16 inch
• Handlebar Diameter: 1 inch (non-dimpled bars only)
• Mounting Side: Left hand (clutch)
• Actuation Type: Hydraulic
• Construction: CNC-machined aluminum
• Includes: Mounting clamps and lever
• Switch Kit Option: Available with or without switch kit
• Switch Count (kit variant): 3 momentary switches with buttons and switch housing
• Switch Wiring (kit variant): Internal or external routing
• Finish Options: Black, Chrome, Polished
• Country of Origin: USA

Fitment Notes

• Compatible with most 1-inch diameter handlebars; not compatible with dimpled bars
• Hydraulic actuation — requires a compatible hydraulic clutch slave cylinder and clutch line; verify your hydraulic clutch system compatibility before ordering
• Not a cable clutch assembly — if your build uses a cable-pull clutch, see the GMA Engineering Mechanical Cable Clutch Lever
• Intended for custom and builder applications; confirm lever reach, clamp clearance, and line routing prior to installation
• Please review the Fitment tab for complete compatibility details