This Wossner piston kit set includes two forged pistons with a standard 101.00mm bore and a measured diameter of 100.96mm. Specifically designed for BMW R1200 series models from 2006 to 2009, the Pro Series pistons are engineered for high-performance applications and long rod configurations, offering enhanced compression and thermal efficiency.

Features

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  Forged piston construction for superior strength and endurance

  
  


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  Engineered for optimal combustion chamber heat transfer to cylinder walls

  
  


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  Elliptical profile ensures a consistent bearing surface under thermal expansion

  
  


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  Distributes thrust loads evenly to reduce stress and prevent piston collapse

  
  


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  Manufactured in Germany

  
  


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  Designed for long rod configuration

  
  

Specifications

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  Bore: 101.00mm

  
  


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  Diameter: 100.96mm

  
  


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  Engine Displacement: 1170 cm³

  
  


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  Stroke: 73.00 mm

  
  


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  Clearance: 0.04 mm

  
  


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  Compression Ratio (Wossner): 12.70:1

  
  


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  Compression Ratio (OEM): 12.00:1

  
  


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  Dome Volume: +4.40 cm³

  
  


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  Compression Height: 27.90 mm

  
  


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  Kit Includes: 2 pistons, pins, rings, and clips

  
  


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  Clips P/N: C22X1.6

  
  


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  Pin P/N: WP009

  
  


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  Ring Set P/N: 1010XSY

  
  

Cross-Reference OEM Part Numbers

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  Part No. 56-W9935.000.WO

  
  


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  Wossner Piston K8710DA-2

  
  

Vehicle Fitments

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  BMW R1200GS 2006–2009

  
  


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  BMW R1200S 2006–2009

  
  


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  BMW R1200ST 2006–2009

  
  


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  BMW R1200RT 2006–2009

  
  


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  BMW R1200R 2006–2009