Description:

Replaces Cylinder OEM for Yamaha 18E-11311-00-00; Piston 3E5-11631-00-97, 3E5-11635-00-00, 3E5-11636-00-00. Replaces Cylinder Head OEM for Yamaha 21W-11111-00-00; Base Gasket 4AW-11351-00-00; Head Gasket 1W7-11181-00-00. Compatible with Yamaha PW80: 1983-2006, BW80: 1986-1990 BW80 Motorcycles. Includes Cylinder, Namura Piston Kit, Gasket Kit, and NGK Spark-Plug. The Standard Cylinder has a 47.00mm Bore and 45.60mm Stroke; The Cylinder Displacement is 79cc and has as 6.6:1 Compression Ratio; Cylinder Material: Steel; Cylinder Sleeve Coating: None.