WOSSNER 87.5mm FORGED PISTON KIT YAMAHA YZ490 1982-1984, IT490 1983-1984

Wossner forged piston kit designed for durability and optimized heat transfer. Engineered with an elliptical shape for uniform bearing surface distribution, preventing piston collapse. Manufactured in Germany for high performance and reliability.

Features

• Forged construction for superior strength and longevity
• Optimized heat transfer for efficient combustion
• Elliptical design for even thrust load distribution
• Manufactured in Germany

Specifications

• Piston Size: 87.42mm
• Bore: 87.50mm
• Oversize: +0.50mm
• Clearance: 0.08mm
• Display: 465 cm³
• Stroke: 82.00mm
• Compression Ratio: 2-stroke
• Compression Height: 40.00mm
• Lock Part Number: CW18
• Pin Part Number: WP042
• Ring Set Part Number: RSC8750 x2

Cross-Reference OEM Part Numbers

• Wossner 8266D050

Vehicle Fitments

• Yamaha YZ490 (1982-1983)
• Yamaha IT490 (1983-1984)

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.