Wiseco 734M07750 Forged Piston Kit Sea-Doo 580 XPS Plated 77.50mm Bore

The Wiseco 734M07750 is a forged piston kit designed for Sea-Doo 580 personal watercraft engines. Featuring a 77.50mm bore diameter with an XPS plated finish, this kit delivers a reliable, high-performance replacement for engines requiring an oversize piston.

Kit Includes:

• Forged aluminum piston
• Piston rings
• Piston pin
• Circlips

Key Features:

• Aerospace-grade forged aluminum construction — the forging process aligns grain flow and compresses material molecules for superior strength, impact resistance, and fatigue resistance compared to cast pistons
• XPS plated cylinder compatibility — engineered for use in XPS (cross-plated) cylinder bores common to Sea-Doo 580 applications
• 77.50mm oversize bore — part of Wiseco's range of oversize options to restore or refresh worn cylinder bores
• CNC diamond-turned finish — precision machining ensures consistent sizing and a proper fit every time
• USA manufactured — produced at Wiseco's Mentor, Ohio facility using in-house forging and CNC equipment
• Optimized strength-to-weight ratio — dedicated forging design maximizes performance while minimizing reciprocating mass

Wiseco part number 734M07750 is also cataloged under kit number WK1254. This piston kit is purpose-built for two-stroke Sea-Doo 580 powertrains and is compatible with the XPS plated cylinder found on these engines.