LA Sleeve Sleeve and Piston Kit Yamaha YZ125 1999-2000 LAS-5378K

A worn or damaged top-end compromises compression, throttle response, and overall engine reliability on your YZ125. The LA Sleeve Sleeve and Piston Kit restores your 2-stroke's performance with a complete rebuild solution, delivering renewed horsepower, torque, and durability without the guesswork of sourcing individual components.

This kit pairs a Moly2000 cylinder sleeve with a precision-matched piston, ensuring proper ring seal and consistent combustion chamber integrity. Whether you're recovering from piston seizure, restoring a high-mileage engine, or refreshing a race motor between seasons, you get everything needed for a professional-quality top-end rebuild in one package.

• Moly2000 cylinder sleeve
• Cast iron bore design
• Pro-forged or pro-cast piston
• High-quality wrist pin bearing
• Complete gasket set included
• Centrifugally-spun construction
• Enhanced ring seal
• Increased compression and torque
• Yamaha YZ125 1999–2000
• MPN: LAS-5378K