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 Multi-Tool Blades This innovative two-piece vent system

This innovative two-piece vent system maximizes airflow to your engine

designed exclusively for the Fire-Retardant (FR) PowerFlow Kit with a 5-pin hole configuration

Leveraging our nitrogen air spring mechanism

It has a built in diagnostics system with a LED indicator that communicates battery charge status: charged

and sensors on motocross bikes

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 Multi-Tool Blades This innovative two-piece vent systemThe 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