757M08500 Wiseco .040 Piston Kit 85.00 mm for Yamaha Wave Runner 1200 1997-1999

Wiseco .040 Piston Kit for Yamaha Wave Runner 1200

This Wiseco .040 overbore piston kit for Yamaha Wave Runner 1200 watercraft provides a 85.00 mm bore size, serving as a rebuild component for 1997-1999 models in need of top-end service.

Overview

This Wiseco piston kit for Yamaha Wave Runner 1200 machines is an overbore replacement set sized at .040 oversize. It restores compression and cylinder sealing on worn 1200cc engines. It suits riders and mechanics rebuilding 1997-1999 Wave Runner 1200 powerplants.

Built For Performance

• .040 inch overbore sizing at 85.00 mm bore diameter
• Forged piston construction for strength under load
• Kit format with piston, rings, and pin components
• Designed to restore cylinder seal after wear
• Larger oversize option for cylinders needing more cleanup

Fits These Machines

• for Yamaha Wave Runner 1200, 1997-1999

On-The-Job Use

• Top-end rebuilds after cylinder scoring or low compression
• Bore-and-hone service requiring oversize pistons
• Freshwater and saltwater personal watercraft engine work

Specs At A Glance

Good To Know

Q: What does .040 oversize mean for my engine? A: A .040 oversize piston is 0.040 inch larger than stock, so the cylinder must be bored and honed to match before installation.

Q: How do I choose between .020 and .040 oversize? A: The correct oversize depends on how much material must be removed from your cylinder walls, which a machinist confirms during boring.

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