Wiseco WK1144 ProLite 2-Stroke Forged Piston Kit 75.50mm Bore Polaris SL900

The Wiseco WK1144 is a ProLite 2-Stroke Forged Piston Kit designed for the 1996–1997 Polaris SL900 personal watercraft. Featuring a 75.50mm bore and Wiseco part number 687M07550, this kit delivers the strength, precision, and durability that Wiseco has built its reputation on since 1941.

Key Features:

• Forged Construction: Manufactured from high-strength forged aluminum for superior tensile strength, reduced weight, and extended service life compared to cast alternatives
• Optimized Strength-to-Weight Ratio: Dedicated forgings and additional lightening operations deliver a piston that performs without adding unnecessary mass
• Precision Machined in the USA: Engineered, forged, and machined at Wiseco's facility in Mentor, OH, ensuring tight tolerances and consistent quality
• Designed for the Specific Application: Built specifically for the 2-stroke powersports engine it serves — not a generic fitment
• Complete Kit Includes: Piston(s), high-quality piston ring(s), wrist pin(s), and circlips — everything needed for a proper top-end rebuild
• Compatible Cylinder Compositions: Suitable for use in cast iron, chrome, Nikasil, and boron composite cylinder bores

The Wiseco WK1144 ProLite piston kit is the trusted choice for PWC enthusiasts and engine builders seeking a proven forged piston solution for the Polaris SL900 triple-cylinder 2-stroke engine. Wiseco part cross-reference: 687M07550.