Description:

Replaces OEM Part Numbers: Yamaha 517-11181-01-00, 3PT-11351-00-00, 18U-11631-00-A0. Compatible with the 1979-1987 Yamaha Yamahopper QT50. Cast Aluminum Piston for Superior Quality and Performance. Piston Kit Complete with Piston, Rings, Needle Bearing, Wristpin and Circlips. Piston Diameter 39.96mm / Piston Height 49.80.