Wiseco WK1253 Sea-Doo 580cc 77mm Forged Piston Kit

The Wiseco WK1253 is a forged replacement piston designed for Sea-Doo 580cc two-stroke personal watercraft engines. Sized at 77mm (3.032" / 734M bore), this piston is manufactured from high-silicon, low-expansion aluminum alloy for superior strength, reduced reciprocating weight, and improved heat transfer compared to cast pistons.

Key Features:

• Forged Aluminum Construction: High-silicon, low-expansion alloy delivers outstanding strength-to-weight ratio and extended service life under high-stress marine conditions
• Diamond-Turned Finish: CNC-machined on precision turning centers for consistent sizing and a perfect bore fit with zero size variation
• Multi-Cylinder Compatibility: Suitable for use in cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
• Oversize Availability: Part of Wiseco's comprehensive oversize piston range, supporting cylinder reconditioning and sleeve replacement programs
• OEM-Quality Fit: Engineered as a direct replacement to restore factory displacement and compression in worn or rebuilt 580cc Sea-Doo powerplants

Wiseco pistons are manufactured in a dedicated, state-of-the-art computerized facility and trusted by both competitive racers and recreational riders worldwide. The WK1253 is the correct replacement for Sea-Doo 580cc engines requiring a standard 77mm bore piston, making it an ideal choice for engine rebuilds, overhauls, or performance restorations on affected PWC models.