Wiseco 778M08296 Sea-Doo Rotax 785 82.96mm Forged Piston Kit

The Wiseco 778M08296 is a high-performance forged piston designed as a direct replacement or oversize upgrade for Sea-Doo Rotax 785 engines. Featuring an 82.96mm bore diameter and a compression ratio of 8300KB, this piston is engineered to restore or improve engine performance in personal watercraft applications.

Wiseco pistons are cold-forged from a high-silicon aluminum alloy, delivering superior strength, thermal stability, and resistance to wear compared to cast alternatives. The proprietary forging process and optimized piston skirt geometry are designed to maximize horsepower and torque output while minimizing friction and weight.

Kit Includes:

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

Key Features:

• Bore size: 82.96mm
• Application: Sea-Doo Rotax 785 engine
• Cold-forged high-silicon aluminum alloy construction
• Optimized skirt design for reduced friction and improved power
• Complete kit includes rings, pin, and circlips
• Oversize piston — cylinder sleeving or boring required for installation

Wiseco is a trusted manufacturer of performance forged pistons for powersports, marine, and motorsports applications. The 778M08296 is an oversize piston; professional cylinder machine work (sleeving or boring) is required prior to installation.