WISECO RE902M06640 Piston Kit - 66.40 mm for Yamaha YZ250/X

Upgrade your Yamaha YZ250 or X with the WISECO RE902M06640 piston kit, designed to deliver exceptional performance and durability under demanding conditions. Crafted from the premium 2000 Series alloy, this piston provides extreme strength while maintaining a lightweight profile, ensuring your engine performs at its best during intense rides and racing events.

The piston features a dedicated forging process that enhances its strength-to-weight ratio, offering superior resilience against the stresses of high-performance riding. Each piston is equipped with high-quality rings that improve sealing efficiency, helping to maintain optimal compression and engine power. The ArmorFit* skirt coating conforms seamlessly to the bore, providing superior control and minimizing wear over time, which translates to longer-lasting piston life and consistent engine performance.

Additional protective features include ArmorPlating? on the crown, shielding it from harmful detonation and reducing the risk of damage during aggressive riding. The improved pinbore design further decreases wear and bore deformation, ensuring the piston maintains its shape and performance throughout its lifespan. Made proudly in the USA, this piston kit is engineered for riders seeking reliability, strength, and top-tier performance for their Yamaha YZ250 or X.