PISTON KIT 85-87 YZ80 48.50, WOSSNER 8186D050 YAMAHA MX
PISTON KIT 85-87 YZ80 48.50, WOSSNER 8186D050 YAMAHA MX
This Wossner piston kit is designed for Yamaha YZ80 models from 1985 to 1987, featuring a 48.50 mm bore and an actual piston diameter of 48.45 mm. Manufactured in Germany, the piston is forged for improved strength and thermal efficiency. Its elliptical design ensures a consistent bearing surface under thermal expansion, promoting even distribution of thrust loads and reducing localised pressure to prevent piston collapse.
Features
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Forged piston for increased strength and durability
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Engineered for effective combustion heat transfer
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Elliptical design provides uniform load distribution
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Manufactured in Germany
Specifications
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Bore size: 48.50 mm
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Actual piston diameter: 48.45 mm
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Display (cm³): 82
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Stroke: 45.60 mm
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Clearance: 0.05 mm
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Compression height: 26.80 mm
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Wossner compression ratio: 2-stroke
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OEM compression ratio: 2-stroke
Cross-Reference OEM Part Numbers
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Wossner Piston Part Number: 8186D050
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Lock Part Number: CW12
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Pin Part Number: WP091
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Ring Set Part Number: RSB4850
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Alternate Part Number: 56-W520+050.WO
Vehicle Fitments
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Yamaha YZ80 1985
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Yamaha YZ80 1986
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Yamaha YZ80 1987