This ProX forged piston kit with a 40.00mm bore is an oversized (+1.00mm) replacement suitable for a wide range of small-capacity two-stroke motorcycles and scooters. Manufactured using the same low-expansion, low-friction alloy as OEM pistons, it offers high-quality performance at an economical price. The kit includes the piston, rings, circlips, and gudgeon pin; the little end bearing must be purchased separately. Cylinder clearance should be checked before ordering.

Features

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  Manufactured from OEM-grade low-expansion, low-friction alloy

  
  


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  Designed for performance and durability in two-stroke engines

  
  


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  Includes piston, rings, circlips, and gudgeon pin

  
  


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  Economical replacement for original piston

  
  


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  Little end bearing not included

  
  

Specifications

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  Bore: 40.00mm (+1.00mm Oversize)

  
  


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  Part Number: PROX 01.1010.100

  
  


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  Cross-Reference: GW0 / GW2

  
  


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  Engine type: 2-Stroke

  
  

Cross-Reference OEM Part Numbers

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  56-W9850.100.PX

  
  


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  PROX 01.1010.100

  
  

Vehicle Fitments

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  Honda Dio 50 (1950–2014)

  
  


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  Aprilia Classic 50 (1950–2014)

  
  


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  Aprilia RS 50 (1950–2005, 2009–2014)

  
  


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  Aprilia RX 50 (1950–2014)

  
  


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  Aprilia MX 50 (1950–2014)

  
  


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  Daelim Message II (1950–2014)

  
  


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  Daelim S-Five (1950–2014)

  
  


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  Daelim Tapo (1950–2014)

  
  


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  Honda Bali 50 (1950–2014)

  
  


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  Honda De Luxe 50 (1950–2014)

  
  


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  Honda New Tact 50 (1950–2014)

  
  


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  Honda SRX 50 Shadow (1950–2014)

  
  


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  Honda Y8R S/X 50 (1950–2014)

  
  


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  Ibeston CL-QT-A 50 (1950–2014)

  
  


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  Kymco DJ 50 (1950–2014)

  
  


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  Kymco KB 50 (1950–2014)

  
  


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  Kymco People 50 (1950–2014)

  
  


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  Kymco Scout 50 (1950–2014)

  
  


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  MBK X Power 50 (1950–2014)

  
  


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  Moto Hispania Furia 50 (1950–2014)

  
  


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  Moto Hispania RX 50 (1950–2014)

  
  


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  Rieju Drac RR 50 (1950–2014)

  
  


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  Rieju Racing 50 (1950–2014)

  
  


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  Rieju RR 50 (1950–2014)

  
  


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  Rieju Spike 50 (1950–2014)

  
  

Additional Model Fitments by Year

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  1990 Yamaha TZR50

  
  


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  1994–2006 Honda Dio SR (SK50)

  
  


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  2001 Daelim Message 50

  
  


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  2004–2005 Aprilia RX 50

  
  


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  2007–2010 Daelim S Five

  
  


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  2009–2010 Kymco Super 9 50