Wiseco 4548M07200 Forged Piston Kit Bore Kawasaki - 72mm KZ1000J 1981-1983

The Wiseco 4548M07200 is a forged aluminum piston kit designed for the Kawasaki KZ1000J (1981–1983). Built to Wiseco's renowned powersports standards, this kit delivers superior strength, reduced weight, and improved thermal efficiency compared to cast OEM replacements — making it an ideal choice for high-performance engine rebuilds and oversize bore applications.

Key Features:

• Forged high-silicon aluminum construction for maximum strength, durability, and heat resistance
• 72.00mm bore diameter (oversize) with a 66.00mm stroke for precise fitment in sleeved cylinders
• Floating wrist pin design for reduced friction and improved longevity under high-RPM conditions
• Optimized piston skirt geometry to maximize horsepower output and throttle response
• Complete kit includes piston, rings, wrist pin, and circlip retainers — everything needed for a full top-end rebuild
• Made in the USA by Wiseco, a trusted name in powersports performance engine components

Note: This is an oversize piston at 72.00mm bore. Cylinder sleeving or boring to the appropriate oversize is required prior to installation. Always verify bore size and cylinder preparation before ordering.