Wiseco WK1262 Kawasaki Forged Piston Kit Bore - JS750 2-Stroke 84mm

The Wiseco WK1262 is a high-performance forged piston kit designed for the Kawasaki JS750 personal watercraft. With an 84mm bore diameter (4mm over standard), this kit is ideal for engine rebuilds requiring an oversize piston to restore or upgrade a worn or bored cylinder. Each kit includes the piston, rings, wrist pin, and circlips — everything needed for a complete top-end service.

Key Features:

• Forged 4032 Aluminum Construction: Precision-forged from high-silicon, low-expansion aluminum alloy for superior strength, reduced weight, and improved heat transfer compared to cast pistons
• 84mm Bore (4mm Oversize): Engineered to match bored or re-sleeved Kawasaki JS750 cylinders for a precise fit and optimal compression seal
• CNC Diamond-Turned Finish: Machined to tight tolerances on computer-controlled turning centers, ensuring consistent sizing and compatibility with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
• Pro-Lite Engineering: Dedicated forgings with optimized skirt design reduce reciprocating weight for quicker engine response and long-term durability
• High-Performance Ring Pack: Included rings deliver reliable compression sealing and reduced blow-by in demanding 2-stroke PWC applications
• Complete Kit: Includes piston, piston ring(s), wrist pin, and circlips — ready to install
• Made in the USA: Engineered, forged, and machined at Wiseco's facility in Mentor, OH

Wiseco has been manufacturing forged pistons for powersports applications for over 80 years, and the WK1262 reflects that legacy of precision and durability. Whether you're performing a standard rebuild or upgrading to an oversize bore, this kit delivers the reliability needed for high-RPM personal watercraft use.