GMA Brake and Clutch Hand Control Master Cylinder Rebuild Kit
Time and heat cycles cause seals, springs, and pistons in hand control master cylinders to lose their original tolerances – producing spongy lever feel and inconsistent pressure output. GMA rebuild kits restore the internal geometry of both the brake and clutch master cylinders, returning each unit to the precise, consistent actuation that new hand controls deliver.
Key Features
- Rebuild kits for GMA 5/8-inch bore brake master cylinder and 9/16-inch bore hydraulic clutch master cylinder
- Includes all wear components: seals, spring, and piston
- Restores firm, consistent lever feel caused by worn or degraded internal components
- Direct replacement components matched to GMA master cylinder specifications
Technical Specifications
- Application: GMA 5/8-inch bore brake M/C and 9/16-inch bore clutch M/C hand controls
- Includes: Seals, spring, piston
- Made in: USA
Fitment Notes
- Select the correct rebuild kit for your master cylinder type – 5/8-inch bore brake or 9/16-inch bore clutch
- Verify bore size before ordering – brake and clutch kits are not interchangeable
- Review the Fitment tab for the complete compatibility breakdown






Reviews
There are no reviews yet