NISSIN Rear Brake Master Cylinder Maintenance Kit (manufacturer part number: YRMK-002) — a complete set designed for the refurbishment of the rear braking system. This kit, designed by NISSIN for motocross applications, includes the necessary parts and seals to replace worn components of the master cylinder and restore reliable braking after service.
- Position: Rear
- Category: Brake caliper / master cylinder repair kit
- Contents: pistons, seals, check valves, and other sealing parts (complete set for the specified application)
- Universe: Cross — suitable for off-road practices
This kit is designed to allow for precise refurbishment of the rear master cylinder without unpleasant surprises: new seals to minimize leaks, pistons ready to replace worn parts. It is particularly suitable for the listed YAMAHA models: YZ 450 F (2026), YZ 250 F (2026), and YZ 250 (2026). Please check specific compatibility with your machine before installation.
Workshop advice: it is recommended to have the installation performed by an experienced mechanic or to follow the manufacturer's documentation for installation and bleeding of the system. Using new wear components prolongs braking reliability but does not exempt from regular checks under off-road conditions.
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