WOSSNER 88.5mm FORGED PISTON KIT YAMAHA YZ490 1984-1990, WR500 1992-1993

Wossner 88.50mm forged piston kit is designed for strength and durability. Engineered for optimal heat transfer, it ensures efficient cooling of the combustion chamber. The elliptical design provides a uniform bearing surface, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany for precision and reliability.

Features

• Forged construction for enhanced strength and longevity
• Optimized heat transfer for improved engine performance
• Elliptical design prevents piston collapse and ensures even load distribution
• Manufactured in Germany for high-quality standards

Specifications

• Bore Size: 88.50mm
• Stroke: 82.00mm
• Compression Height: 40.00mm
• Number of Rings: 2
• Clip Part Number: CW18
• Pin Size: 18mm
• Pin Part Number: WP042
• Cylinders: 1
• Compatible Needle Bearing: N1022

Cross-Reference OEM Part Numbers

• Part No: 56-W4815.150.WO
• Wossner Part No: 8317D150

Vehicle Fitments

• Yamaha YZ490 (1984 - 1990)
• Yamaha WR500 (1992 - 1993)

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.