790M08200 .040 Piston Kit 82mm for Yamaha Wave Runner III GP 700 1994-1997

.040 Piston Kit for Yamaha Wave Runner III GP 700

This Wiseco .040 overbore piston kit, referenced as 790M08200, brings a 82mm bore to the Yamaha Wave Runner III GP 700 700cc two-stroke engine and restores compression on a worn or scored top end.

Overview

This .040 piston kit for Yamaha Wave Runner III GP 700 watercraft is a top-end rebuild component sized at 82mm to clean up a cylinder that has been bored oversize. It restores the piston-to-wall clearance and compression the 700cc engine needs to run cleanly. It suits riders and shops rebuilding a high-hour Wave Runner III GP 700 rather than replacing the whole engine.

Built For Performance

• 82mm bore size matches a .040 overbore finished cylinder
• Wiseco forged piston construction for strength under two-stroke heat and load
• Kit format includes piston, rings, wrist pin and clips for a complete top-end rebuild
• Oversize sizing restores compression lost to cylinder wear
• Suited to the 700cc two-stroke powerplant in the Wave Runner III GP

Fits These Machines

• for Yamaha Wave Runner III GP 700 1994
• for Yamaha Wave Runner III GP 700 1995
• for Yamaha Wave Runner III GP 700 1996
• for Yamaha Wave Runner III GP 700 1997

On-The-Job Use

• Top-end rebuild after a seizure or lean condition
• Cylinder rebore and hone service work
• Freshwater and saltwater personal watercraft use
• Seasonal maintenance on a high-hour 700cc engine
• Recreational riding and race prep builds

Specs At A Glance

Good To Know

Q: Does this piston kit fit a standard bore cylinder? A: No, this is a .040 oversize piston meant for a cylinder bored and honed to 82mm, so the cylinder must be machined to match before installation.

Q: Do I need to check clearance before fitting it? A: Yes, always measure piston-to-wall clearance against the piston manufacturer's spec and verify jetting after a top-end rebuild.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.