This Wossner forged piston kit features an 88.02mm bore size (87.97mm actual), offering a +0.02mm oversize fitment for a variety of KTM, Husaberg, and Husqvarna 350cc models. Made in Germany, the piston includes a two-ring design and an elliptical profile to ensure even load distribution during thermal expansion. Designed for reliability and performance, it maintains OEM compression specifications and is built to endure high-stress operation.

Features

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  Forged piston with +0.02mm oversize specification

  
  


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  Elliptical design promotes uniform pressure distribution under heat expansion

  
  


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  Engineered for effective combustion heat transfer and long-term durability

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore Size: 88.02mm (actual 87.97mm)

  
  


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  Displacement: 349 cm³

  
  


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  Stroke: 57.50 mm

  
  


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  Clearance: 0.05 mm

  
  


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  Compression Ratio (Wossner): OEM

  
  


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  Compression Ratio (OEM): 12.30:1

  
  


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  Dome Volume: -0.10 cm³

  
  


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  Compression Height: 20.50 mm

  
  


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  Lock Part Number: CW18

  
  


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  Pin Part Number: WP054

  
  


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  Ring Set Part Number: 880XSY

  
  


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  Rod Part Number: P4061

  
  

Cross-Reference OEM Part Numbers

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  56-W960.C.WO

  
  

Vehicle Fitments

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  KTM 350 EXC-F (2012–2015)

  
  


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  KTM 350 XC-F (2012–2015)

  
  


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  KTM 350 XCF-W (2012–2015)

  
  


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  KTM Freeride 350 (2012–2014)

  
  


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  Husaberg FE350 (2013–2014)

  
  


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  Husqvarna FE350 (2014)