
ATHENA Top End Gasket Kit — manufacturer reference P400485600265. This kit includes the sealing components necessary for the refurbishment of the top end: cylinder head gaskets and other sealing parts designed to restore the seal between the cylinder, cylinder head, and crankcases. Designed for engine interventions, it allows for a proper reassembly of your top end after disassembly and helps prevent oil or coolant leaks related to worn gaskets.
This kit is aimed at motorcyclists and mechanics who want to restore the top end without surprises. Replacing the gaskets during an intervention (cylinder/head) is essential to maintain compression and prevent leaks. Compatible with several vintage models, it is particularly suitable for YAMAHA DT 250 (1977–1979) for those restoring or maintaining classic trails and roadsters.
ATHENA is renowned for its replacement solutions for 2T and 4T engines — this top end gasket kit provides a reliable foundation for a clean and meticulous refurbishment. Check reference P400485600265 before installation to ensure compatibility with your machine.