1977-83 Yamaha XS650 Front Master Cylinder - Slim Light Weight - 11.0mm - 8mm Sealant & Adhesives Replace it during crankcase or

Replace it during crankcase or crankshaft service if the bearing is rough

Verify full brake or shift movement before riding

or the drive parts are worn during inspection

missing rubber

1977-83 Yamaha XS650 Front Master Cylinder - Slim Light Weight - 11.0mm - 8mm Sealant & Adhesives Replace it during crankcase orFront Master Cylinder Slim Light Weight 11. 0mm 8mm. This front master cylinder part rebuilds or services the brake master cylinder so lever pressure transfers cleanly to the front brake line. Choose this front master cylinder for custom brake setups or to replace a failed unit that leaks, sticks, or cannot build reliable pressure. Fitment Compatibility Fits Yamaha: Yamaha XS650 (1977 81) Yamaha XS650S (1978 83) Product Details Front hydraulic master