PISTON KIT 85-87 YZ80 49.50, WOSSNER 8186D150 YAMAHA MX
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This item is dispatched directly to you by our supplier. Supplier stock is separate from stock held at BTP.
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PISTON KIT 85-87 YZ80 49.50, WOSSNER 8186D150 YAMAHA MX is available to order. Please contact us to confirm availability and lead time.
Pickup currently unavailable at Braydon Trailers HQ
BTP – Your Trusted Trailer & ATV Specialists in the South West
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Description
Description
This Wossner piston kit is intended for Yamaha YZ80 models from 1985 to 1987 and features a 49.50 mm bore with an actual piston diameter of 49.45 mm. Forged in Germany, the piston is built for high strength and optimised heat transfer from the combustion chamber to the cylinder walls. Its elliptical shape ensures even load distribution under thermal expansion, reducing localised pressure and helping to prevent piston collapse.
Features
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Forged piston construction for enhanced strength
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Engineered for efficient heat dissipation
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Elliptical design supports uniform thrust load distribution
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Manufactured in Germany
Specifications
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Bore size: 49.50 mm
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Actual piston diameter: 49.45 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: 8186D150
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Lock Part Number: CW12
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Pin Part Number: WP091
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Ring Set Part Number: RSB4950
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Alternate Part Number: 56-W520+150.WO
Vehicle Fitments
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Yamaha YZ80 1985
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Yamaha YZ80 1986
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Yamaha YZ80 1987
