ApplicationCompatible for Yamaha Bear Tracker 250, Year 1999-2004 compatible for Yamaha Timberwolf 250, Year 1992-2000 compatible for Yamaha Moto-4 250, Year 1989-1991SpecificationOEM & Part Number: 4BD-11310-01-00, 5VC-11351-01-00, 4BD-11631-00-Y0, 4BD-11610-00-00, 29U-11633-00-00, 93450-17044-00, DR7-EA000-00-00, 3GH-11181-00-00 Complete Standard Sized Replacement Cylinder Kit Cylinder Bore and Stroke: 71.00mm x 58.00mm Cylinder Displacement: 229.6cc / Compression 8.7:1 Package Includes: Cylinder Piston Ring Set Wrist-Pin Circlip Set Head Gasket Base Gasket Spark Plug (Just as the picture shown)