
ATHENA Top End Gasket Kit (manufacturer part no. P400270600047): a kit designed for the refurbishment and reassembly of the top end on motocross bikes. This kit includes the necessary gaskets for mounting the cylinder and cylinder head, including valve stem seals, to get your engine back in working order after disassembly.
Designed for routine maintenance and repair operations, this kit simplifies the replacement of gaskets during a cylinder head/cylinder disassembly. Ideal for amateur mechanics as well as professionals, it allows you to gather the essential sealing components before reassembly: sealing surfaces, valve guides, and cylinder head gaskets. Note: adhere to the torque specifications and manufacturer recommendations during reassembly.
Models often associated with this type of kit include the KTM 65 SX (2023), the HUSQVARNA TC 65 (2023), and the GAS GAS MC 65 (2023) — always check full compatibility before ordering. For a clean and reliable result, make sure to inspect the sealing surfaces, the condition of the valve seats, and the tolerances before final assembly.