MOTOJOY Yamaha YZ 125 Top End Rebuild Kit Cylinder Barrel Piston Head Kit 54mm Nikasil YZ125 2005-2021

‘Motojoy’ Top-End Rebuild Kit – Yamaha YZ 125 (2005-2021) 

Rebuild your engine with confidence using the Motojoy’s Top End Rebuild Kit! An ideal solution for full top-end rebuilds on modern two-stroke engines.

This kit includes:

• Cylinder Head
• Cylinder Barrel (Nikasil Plated)
• Piston & Rings Set
• Piston Pin & Circlips
• Gaskets

Featuring a precision bore with a durable Nikasil coating, the cylinder provides excellent wear resistance, reduced friction, and efficient heat dissipation. Manufactured by Motojoy to meet OEM specifications, this kit ensures accurate piston fitment, stable compression, and smooth, reliable power delivery across trail, enduro, and race conditions.

Key Features:

• Nikasil coated bore

• Manufactured by Motojoy

• OEM-spec design for precise fitment and easy installation

• Improved heat control, durability, and engine longevity

A dependable and cost-effective kit for riders looking to restore performance, reliability, and confidence in their engine rebuild.