At DMG Motorsports, we present the All Balls Racing Brake Master Cylinder Rebuild Kit (21-81074) — a complete, precision-engineered solution for restoring a leaking or underperforming brake master cylinder to like-new condition. Whether you're dealing with a soft brake lever, fluid seepage, or inconsistent braking feel, this kit gives you every component needed to properly re-seal your master cylinder without the added expense of a full OE replacement unit. Riders and mechanics trust All Balls Racing for durable, correctly fitted rebuild components that get bikes back on the road quickly and safely.

Designed specifically for your master cylinder's fitment, this kit takes the guesswork out of sourcing individual seals, washers, and hardware. Everything arrives together in one box, ready for installation, so you can complete the job in a single sitting and return to smooth, reliable braking performance.

Features:

• Contains all parts needed to re-seal a leaking brake master cylinder in one complete kit
• Includes cup seals, copper washers, and O-rings sized for correct fitment
• Replacement screws included where applicable for a full hardware refresh
• Restores consistent lever feel and braking performance lost to worn or failed seals
• A cost-effective alternative to replacing the entire master cylinder assembly
• Sold as a complete kit matched to specific fitment; contents vary by application

Fitment