Parts Numbers: factory numbers are specific to the component designation and not listed here.Refer to provided dimensions for component matching.Fitment: fit for XT225 1992-2000 fit for TTR225 1999-2004 fit for XT225 2005-2016 fit for TTR230 (Compatibility confirmed by 70mm bore specification across applicable model years.) Specifications: Cylinder Bore Diameter: 70.00 mm Material (Cylinder): Metal Material (Piston): Natural Metal Material (Rings): Steel Kit Type: End Engine Rebuild Package Includes: One Cylinder Housing One Piston Assembly Set One Piston Ring Set One Cylinder Head Gasket One Cylinder Base Gasket One Piston Pin (Wrist Pin) Installation Information: Installation requires disassembly of the upper engine components.Components must be precisely oriented and torqued according to the specified service manual procedures for the destination engine model.All gasket mating surfaces must be free of residual material prior to component placement.Lubrication of cylinder walls and piston components is required prior to assembly.Final torque specifications must be verified using calibrated measuring instruments.