Description:

Replaces OEM Part Numbers: Yamaha 3L5-11311-01-00, 517-11181-01-00, 3L5-11111-02-00, 3PT-11351-00-00, 90116-06269-00, 95380-06600-00, BP4-HS000-00-00, 18U-11631-00-A0, 260-11601-03-00, 2E9-11633-00-00. Compatible with the 1979-1987 Yamaha QT50, 1981-2017 Yamaha PW50 Motorcycles. Includes Cylinder, Cylinder Head, Piston Kit, Gasket Kit, Hardware and NGK Spark-Plug. The Standard Bore Cylinder has a 40.00 mm Bore and 39.20 mm Stroke. The Cylinder Displacement is 49cc and has a 6.0:1 Compression Ratio; Cylinder Material: Steel; Cylinder Sleeve Coating: None.