Athena P400485600267 Top End Gasket Kit for Yamaha YZ250 (1999‑2020) – Complete Cylinder Head, Base & Exhaust Gasket Set for Reliable 2‑Stroke Top‑End Rebuilds engine covers The precision-engineered foam construction helps

The precision-engineered foam construction helps trap dust

and more - without sacrificing your Outbacks style

Replace your stock filter’s restrictive design with this high-flow solution to unlock sharper throttle response

Lovingly handcrafted in the USA

The chain guide’s two-part design

Athena P400485600267 Top End Gasket Kit for Yamaha YZ250 (1999‑2020) – Complete Cylinder Head, Base & Exhaust Gasket Set for Reliable 2‑Stroke Top‑End Rebuilds engine covers The precision-engineered foam construction helpsThe Athena P400485600267 Top End Gasket Kit provides a complete, highquality sealing solution for Yamaha YZ250 twostroke engines from 19992020. Manufactured with premium materials and engineered to OEMlevel specifications, this kit restores proper compression, prevents leaks, and ensures longlasting durability during topend rebuilds. Perfect for motocross racers, offroad riders, and anyone maintaining peak performance from their YZ250, Athena delivers