757M08450 Wiseco Piston Kit for Yamaha Wave Runner XL760 1997-2000 .020 84.50 mm

Wiseco .020 Piston Kit for Yamaha Wave Runner XL760

This Wiseco .020 piston kit replaces OEM 757M08450 with 84.50mm overbore pistons to restore compression and top-end power in Yamaha Wave Runner XL760 personal watercraft.

Overview

This Wiseco .020 piston kit for Yamaha Wave Runner XL760 brings fresh top-end performance back to 1997-2000 models. Each kit includes an 84.50mm overbore piston with rings, wrist pin, and circlips so you can complete a cylinder rebuild in one order. Machine work is required to match the .020 overbore, making this kit ideal for riders and shops already planning a cylinder bore.

Built For Performance

• Forged piston construction for strength under high-rpm marine use
• 84.50mm bore size, .020 inch over stock, OEM cross-reference 757M08450
• Rings, wrist pin, and circlips included for a complete top-end install
• Overbore sizing restores worn cylinder walls to spec
• Designed for two-stroke marine engine rebuilds

Fits These Machines

• for Yamaha Wave Runner XL760 1997
• for Yamaha Wave Runner XL760 1998
• for Yamaha Wave Runner XL760 1999
• for Yamaha Wave Runner XL760 2000

On-The-Job Use

• Top-end rebuilds after compression loss
• Cylinder boring and honing projects at .020 over
• Jet ski engine refreshes before the riding season
• Race or performance builds needing a fresh piston

Specs At A Glance

Good To Know

Q: Do I need to bore my cylinder for this kit? A: Yes, this .020 overbore piston requires the cylinder to be machined to 84.50mm for proper clearance.

Q: Is this an original Yamaha part? A: No, this is a Wiseco piston kit made for Yamaha Wave Runner XL760 models and is sized to the OEM 757M08450 reference.

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