Motorcycle STD 72mm 300cc Cylinder Block Kit for XC, XC-W, EXC 300, TE 300i, TX 300i, EC 300, and EX 300 models from 2019 to 2023.Compatible with XC 300 (2020–2022), XC-W 300 (2019–2023), EXC 300 (2019–2023), TE 300i (2019–2023), TX 300i (2020–2022), EC 300 (2021–2023), and EX 300 (2021–2023).Type: Cylinder Kit.Material: Aluminum.Bore size: 72mm.Includes cylinder block, piston ring, piston pin, and gasket set.Designed for electronic fuel injection (EFI) engines.Fits ZS174MN-5–based 300cc four-stroke air-cooled and water-cooled engine configurations as used in specified models.Replacement part intended to restore function and fitment. This component is not from the brand.References to models are used only to indicate fitment.