16-18 YAMAHA WR450F Piston Race bigbore with cylinder seals

Piston kit and cylinder seals for motocross bikes.

The Topend kits are pre-made with the best Vertex pistons with the piston you indicated.

The Topend kit includes:

1. Piston
2. cylinder seals
3. The roller cage for 2-stroke engines and the timing chain for 4-stroke engines

The kit greatly facilitates the replacement of the piston by saving money and precious time