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)