Wiseco Yamaha YZ125 05-20 GP Series(846M05600) Piston

The Wiseco PK1391 GP Series Top End Kit is a premium piston kit with gaskets, designed for optimal performance and durability in Yamaha YZ125 and YZ125X two-stroke engines. Crafted from 4032 aluminum alloy, this kit features an Electra-Coated crown and ArmorGlide® skirt coating for maximum wear resistance and protection against micro-welding, galling, and detonation.

Engineered, forged, and machined in the USA, this kit promotes enhanced throttle response and acceleration through extra lightening operations. It provides the quality and performance necessary for endurance and sustained high RPM riding, whether for racing or recreational use.