| Size | 4.247" |
|---|---|
| Product Type | Pistons & Kits |
| Product Group | Engine |
| Catalogue | ROAD |
| Piston Diameter | 4.247" |
PISTON KIT HARLEY 4.247″ SET/2, WOSSNER K8852DA-2 DAVIDSON, ROAD
This Wossner piston kit is built for Harley-Davidson Twin Cam engines modified to Big Bore configurations of 103 or 113 cu. in., covering model years 1999 to 2012. Featuring a standard bore size of 4.247″ and a domed 10:1 compression ratio, the kit is engineered for high performance and durability under demanding conditions. Manufactured in Germany, each 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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Designed for superior heat transfer from combustion chamber to cylinder walls
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Elliptical design ensures uniform bearing surface under thermal expansion
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Distributes thrust loads evenly and reduces localised pressure
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Prevents piston collapse under high-temperature 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 K8852DA-2
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56-W9973.000.WO
Vehicle Fitments
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Harley-Davidson Twin Cam 88″ Big Bore (103 cu. in.) 1999–2012
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Harley-Davidson Twin Cam Big Bore (113 cu. in.) 1999–2012
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