Yamaha 5XC-W2587-00-00 Front Brake Master Cylinder Assembly

Genuine Yamaha front brake master cylinder sub assembly designed for hydraulic brake actuation on select off-road motorcycle models. Features aluminum body construction with integrated fluid reservoir and lever pivot interface. Engineered to OEM specifications for consistent brake feel and reliable performance in motocross and enduro applications. Direct OEM replacement for part number 5XC-W2587-00-00. Compatible with Yamaha YZ125 (2007-2023), YZ250 (2007-2023), YZ450F (2007-2023), WR250F (2016-2023), WR450F (2016-2023). Supersedes earlier part variants in the W2587 series for specified model years.