WSM 50-255-07K Piston Kit 1mm Oversize 77mm Bore Kawasaki 300

The WSM 50-255-07K is a high-quality oversize piston kit designed for Kawasaki 300cc ATV engines that have been bored 1.00mm over standard to a 77.00mm bore diameter. This kit is engineered for engine rebuilds on overbored cylinders and provides excellent performance and durability.

Key Features:

• 1.00mm oversize piston for 77.00mm bore diameter
• Competitively priced forged aluminum construction
• MOS2 (molybdenum disulfide) coating for superior heat dissipation and reduced friction
• Made in Germany to meet or exceed OEM specifications
• Complete kit includes piston, ring set, wrist pin, and improved E-clips

Important: This is an oversize piston kit designed exclusively for cylinders that have already been overbored to 77.00mm. It will NOT work with standard bore cylinders or sleeves. The MOS2 coating draws heat through the piston walls for enhanced thermal management and extended service life.

OEM Cross-Reference: Kawasaki 13027-1157, 13027-1178