Wossner Piston Kit 82-84 YZ490 87.50mm, Forged Wossner 8266d050

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⚠️ Fitment note: The Make/Model filter is for guidance only. Please verify model / year / engine size in the product description before purchase. The product description is the def initive fitment reference. If you’re unsure, message us and we’ll confirm fitment. 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) Show more