| Size | 41.50mm |
|---|---|
| Product Type | Pistons & Kits |
| Product Group | Engine |
| Catalogue | DIRT, ROAD |
| Piston Diameter | 41.5 |
| Bore Diameter | |
| Piston Grade | |
| Compression Ratio |
PISTON KIT 81-19 PW50 41.50, 8267D150 WOSSNER YAMAHA
This Wossner forged piston kit is a +1.50mm oversize replacement for Yamaha PW50 models from 1981 to 1995. Precision-built in Germany, it is ideal for engines requiring a significant overbore while maintaining durability and performance in small-displacement two-stroke applications.
Features
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Forged piston construction for enhanced strength and longevity
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Elliptical design ensures a consistent bearing surface during heat expansion
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Optimised for efficient heat dissipation from the combustion chamber to cylinder walls
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Evenly distributes thrust loads to reduce the risk of piston collapse
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Manufactured in Germany
Specifications
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Bore Size: 41.50mm
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Actual Piston Size: 41.45mm
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Stroke: 39.20mm
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Piston Clearance: 0.05mm
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Wossner Compression Ratio: 2-stroke
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OEM Compression Ratio: 2-stroke
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Compression Height: 24.90mm
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Lock Part Number: CW10
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Pin Part Number: WP105
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Ring Set Part Number: RSB4150
Cross-Reference OEM Part Numbers
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Part No: 8267D150
Vehicle Fitments
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Yamaha PW50 (1981–1995)
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