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Engines and Components› Pistons and Piston Rings

Wiseco

Wiseco 76-96 Kawasaki JS440ProLite (423M07150) Piston Kit

$432.95 $389.99 Save $42.96

SKU: W00C WK1007

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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Wiseco WK1007 is a 2-stroke forged series piston kit designed for Kawasaki JS440 Jet Skis. It features improved tensile strength over cast pistons for enhanced performance and service life. The kit includes a piston (part #423M07150), ring set (part #2815CD), wrist pin (part #S259), circlips (part #CW16), and a gasket (part #W5294). The pistons are engineered, forged, and machined in Mentor, OH, USA. This kit results in a 481cc displacement with a 71.50mm bore, which is a 3.00mm oversize.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandWiseco
Part NumberW00C WK1007

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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