PISTON KIT HARLEY 4.247" SET/2, WOSSNER K8858DA800-2 DAVIDSON, ROAD
This Wossner piston kit is designed for Harley-Davidson Twin Cam engines upgraded to a Big Bore 124 cu. in. configuration, covering model years 1999 to 2012. With a standard bore size of 4.247" and a domed 10:1 compression ratio, the kit ensures high durability and optimal thermal efficiency. Manufactured in Germany, the kit includes two forged pistons along with rings, clips, and pins.
Features
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Forged high-performance pistons with skirt coating
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Engineered for efficient heat transfer from combustion chamber to cylinder walls
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Elliptical design provides a uniform bearing surface under heat expansion
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Evenly distributes thrust loads and reduces localised pressure
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Helps prevent piston collapse during high-stress engine operation
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Includes pistons, rings, clips, and pins
Specifications
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Bore size: 4.247"
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Size: Standard
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Compression ratio: 10:1
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Dome type: Domed
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Quantity: Kit includes 2 pistons
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Country of manufacture: Germany
Cross-Reference OEM Part Numbers
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Wossner K8858DA800-2
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56-W9974.000.WO
Vehicle Fitments
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Harley-Davidson Twin Cam Big Bore (124 cu. in.) 1999–2012