602M07700 Wiseco Std Piston Kit for Yamaha WaveRunner III 650 1990-1996 77.00mm

Wiseco Std Piston Kit for Yamaha WaveRunner III 650

This Wiseco Std piston kit, cross-referenced as 602M07700, is a 77.00mm standard bore piston assembly built to restore the top end of your 650cc Yamaha WaveRunner III engine.

Overview

This Wiseco Std Piston Kit for Yamaha WaveRunner III 650 is a 77.00mm standard bore piston assembly that brings compression and performance back to a worn or rebuilt top end. Each piston kit is built for riders and shops doing a standard-bore rebuild on the 1990 through 1996 WaveRunner III 650. The Wiseco Std Piston Kit offers the precision and durability expected from a forged piston replacement.

Built For Performance

• Forged piston construction for high-strength performance under load
• Standard bore size at 77.00mm matching the factory cylinder
• Complete kit including piston, rings, wrist pin, and circlips
• Cross-referenced to part number 602M07700 for easy verification
• Sized as a direct replacement without cylinder boring
• Heat-treated alloy that resists thermal expansion under stress

Fits These Machines

• for Yamaha WaveRunner III 650 (1990)
• for Yamaha WaveRunner III 650 (1991)
• for Yamaha WaveRunner III 650 (1992)
• for Yamaha WaveRunner III 650 (1993)
• for Yamaha WaveRunner III 650 (1994)
• for Yamaha WaveRunner III 650 (1995)
• for Yamaha WaveRunner III 650 (1996)

On-The-Job Use

• Top-end rebuilds on 650cc two-stroke personal watercraft engines
• Engine refreshes following piston wear or ring failure
• Standard-bore replacement during a restoration project
• Recreational PWC repair during spring maintenance

Specs At A Glance

Good To Know

Q: Does this kit include rings and a wrist pin? A: Yes, a complete piston kit typically includes the piston, rings, wrist pin, and circlips. Confirm the exact contents with your supplier before ordering.

Q: Does the cylinder need to be bored for this piston? A: No, this standard bore piston is sized to match the factory cylinder. Measure the existing bore to confirm it is still within specification before installation.

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