Wiseco 749M08050 Forged Piston Kit 80.50mm for Kawasaki 1200 Ultra 150

The Wiseco 749M08050 is a forged 2-stroke piston kit designed for the Kawasaki JH1200 Ultra 150 personal watercraft, featuring an 80.50mm oversize bore. Engineered, forged, and machined in the USA, this kit delivers the strength, precision, and reliability that Wiseco has been known for since 1941.

Key Features:

• Forged high-silicon, low-expansion aluminum construction — provides superior tensile strength, reduced reciprocating weight, improved heat transfer, and extended service life compared to cast alternatives
• Anti-detonation grooves and advanced ring land profiles — eliminate ring blow-by and maximize combustion efficiency for peak engine performance
• Diamond-turned CNC finish — guarantees tight dimensional consistency and a precision surface finish with no size variation from part to part
• Compatible with all cylinder bore compositions — installs confidently in cast iron, chrome, Nikasil, and boron composite cylinders
• Oversize bore option — the 80.50mm bore extends the service life of worn cylinders; compatible with replacement sleeves for chrome, Nikasil, and boron composite cylinders
• Complete kit — includes piston, ring(s), wrist pin, and circlips for a straightforward, all-in-one repair

Built from race-proven designs trusted by top competition teams across all forms of powersports racing, the Wiseco 749M08050 piston kit is the premium choice for performance rebuilds and oversize engine restoration on the Kawasaki 1200 Ultra 150 and related applications.