PISTON KIT HARLEY 3.872" SET/2, WOSSNER K8857D015-2 DAVIDSON, ROAD
This Wossner piston kit is designed for Harley-Davidson Twin Cam 88" engines that have been upgraded to a Big Bore 103 cu. in. configuration. With a bore size of 3.872" (+0.005" oversize) and a compression ratio of 10:1, this forged piston set ensures optimal performance, heat dissipation, and durability under high-stress conditions. Manufactured in Germany, this kit includes two pistons along with rings, clips, and pins for complete installation.
Features
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Forged high-performance pistons with skirt coating
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Engineered for improved combustion heat transfer to cylinder walls
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Elliptically designed to provide uniform bearing surface under heat expansion
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Helps eliminate localised pressure and evenly distribute thrust loads
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Prevents piston collapse under thermal stress
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Includes pistons, rings, clips, and pins
Specifications
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Bore size: 3.872"
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Oversize: +0.005"
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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 K8857D015-2
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56-W9967.015.WOO
Vehicle Fitments
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Harley-Davidson Twin Cam 88" Big Bore (103 cu. in.) 1999–2012