Wiseco 734M07700 Forged Piston Kit 77.00mm Sea-Doo 580 2-Stroke XPS Plated

The Wiseco 734M07700 is a forged aluminum piston kit designed for Sea-Doo 580cc two-stroke personal watercraft engines. Sized at 77.00mm bore (1.00mm oversize) with ring part number 3032TD, this kit delivers a precision oversize fit ideal for engine rebuilds where cylinders have been bored to accept an oversize piston.

Each kit is forged from high-silicon, low-expansion aluminum alloy, providing superior tensile strength, reduced reciprocating mass, and improved thermal transfer compared to cast alternatives. The piston features an XPS (cross-hatch plated skirt) finish for enhanced break-in characteristics and long-term wear resistance.

Key Features:

• 77.00mm bore diameter — 1.00mm oversize for bored cylinders
• Forged aluminum construction — stronger and lighter than cast pistons
• XPS plated skirt — optimized for cross-hatch and plated cylinder bore compositions including cast iron, chrome, Nikasil, and boron composite
• CNC diamond-turned finish — guarantees dimensional accuracy and zero size variation
• Complete kit — includes piston, piston rings (3032TD), wrist pin, and circlips
• Designed for 580cc two-stroke engines — engineered for personal watercraft applications
• Made in the USA — manufactured at Wiseco's Mentor, Ohio facility

Wiseco engineers use 3D design software and finite element modeling to develop pistons optimized for maximum strength at minimum weight. The result is a performance piston that improves throttle response and engine efficiency over stock components, backed by Wiseco's industry-leading manufacturing standards.