Description Yamaha RD400 (all years including Daytona) Rear Master Cylinder Rebuild Kit. Includes main piston seal, spring with cap, circlip, and dust boot, all the wearable parts that need to be replaced when rebuilding the master cylinder. Yamaha stopped making the rebuild kits several years ago and the aftermarket kits had fitment issues and were also recently discontinued, so we decided to produce our own kit. We have tested the parts in this kit for fitment and performance. Note this kit is assembled with OEM parts.
