At DMG Motorsports, we present the All Balls Racing Master Cylinder Rebuild Kit (21-81007) — the trusted fix for a leaking or underperforming brake or clutch master cylinder. Built to OEM specifications, this kit gives riders and technicians everything needed to restore firm, consistent lever feel without the expense of a full master cylinder replacement. Whether you're servicing a dirt bike, street bike, ATV, or UTV, this rebuild kit is the smart, cost-effective way to stop leaks and bring your braking system back to like-new performance.

Features:

• Contains all the components needed to re-seal a leaking master cylinder in one convenient kit
• Includes cup seals, copper washers, O-rings, and replacement screws where applicable
• Engineered to meet OEM specifications for a precise, reliable repair
• Fits applications across Honda, Kawasaki, Suzuki, and Yamaha models
• Restores like-new master cylinder performance and stops fluid leaks
• A cost-effective alternative to purchasing a full replacement master cylinder assembly
• Sold as a complete kit for straightforward, efficient servicing

Fitment