WSM Complete Top End Kit for Yamaha WaveRunner & WaveJammer 73mm Bore - Watercraft Engine Rebuild

Complete Top End Kits Include: Pistons, Rings, Wrist Pins, Circlips, Top End Bearings, Head, Base, Common Intake and Exhaust Gaskets required for rebuilding the top end of the motor

The WSM Complete Top End Kit (Part Number 010-801-14) is designed to provide a comprehensive solution for rebuilding the top end of Yamaha WJ500 and WR500 watercraft engines from 1987 to 1992. This kit includes pistons, rings, wrist pins, circlips, top end bearings, and all necessary gaskets such as head, base, intake, and exhaust, making it an all-in-one package for engine restoration. Crafted specifically for a 73mm bore size, these components are engineered to restore power and performance efficiently.
Constructed with high-strength hardened aluminum, the pistons in this kit belong to the Platinum Series, which offers exceptional durability by preventing skirt and ring groove breakage. The pistons feature a nonabrasive coating on the walls, reducing heat and friction during operation. This coating enhances horsepower output and significantly extends piston life, ensuring reliable performance over time.
Manufactured to meet or exceed OEM specifications, this kit guarantees compatibility and high-quality fitment for your Yamaha watercraft. The components are designed to withstand the demanding conditions of watercraft engine operation, providing both longevity and optimal power delivery. Whether you're performing a routine rebuild or restoring an older model, the WSM Complete Top End Kit offers a precise, durable solution to keep your Yamaha watercraft running smoothly and efficiently for many seasons to come.

Features:

• Platinum Series pistons made of high-strength hardened aluminum to prevent skirt and ring groove breakage

• Nonabrasive coating on piston walls reduces heat and friction for increased horsepower and extended piston life

• Made to exact OEM specifications ensuring proper fit and reliable performance

Product Type: Piston kits & Components
Bore Size: 73.00 mm
Segment: Watercraft
Division: Engine
Class: Piston Kits & Components
Sub Class: Top End Kits

FITMENT:
1987 Yamaha WaveJammer (WJ500)
1987 Yamaha WaveRunner (WR500)
1988 Yamaha WaveJammer (WJ500)
1988 Yamaha WaveRunner (WR500)
1989 Yamaha WaveJammer (WJ500)
1989 Yamaha WaveRunner (WR500)
1990 Yamaha WaveJammer (WJ500)
1990 Yamaha WaveRunner (WR500)
1991 Yamaha WaveRunner (WR500)
1992 Yamaha WaveRunner (WR500)
1993 Yamaha WaveRunner (WR500)