This standard bore cylinder kit is a complete top-end replacement set designed to match original equipment performance for 450 cc applications. It includes a lightweight aluminium cylinder with a nickel-silicon wear-resistant coating, a piston assembly, and all required gaskets, and is designed to install without modifications to the engine crankcase.

Features

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  Standard bore cylinder kit intended to match original equipment performance

  
  


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  Wear-resistant nickel-silicon cylinder coating for smooth operation and reduced wear

  
  


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  Piston design intended to reduce friction

  
  


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  Includes cylinder, piston, piston pin, piston rings, and full gasket set

  
  


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  Designed for installation without engine crankcase modifications

  
  


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  Developed and validated through bench and road testing

  
  


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  Must be used in accordance with applicable national regulations; manufacturer accepts no responsibility for improper use

  
  

Specifications

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  Manufacturer part number: P400485100046

  
  


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  Bore diameter: 95.00 mm

  
  


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  Displacement: 450 cc

  
  


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  Compression ratio: 11.4:1

  
  


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  Net weight: 1.21 kg

  
  


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  Cylinder material: aluminium

  
  


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  Cylinder coating: nickel-silicon (Motor-Nicksil)

  
  

Cross-Reference OEM Part Numbers

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  S4F09500012A

  
  


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  S4F09500012B

  
  


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  P400485160012

  
  


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  S41316023

  
  

Vehicle Fitments

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  YAMAHA YFZ BILL BALANCE EDITION 450 cc (2010–2025)

  
  


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  YAMAHA YFZ R 450 cc (2009–2013)

  
  


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  YAMAHA YFZ R BLUISH WHITE/DEEP PURP.SOLID/BLACK 450 cc (2009–2025)

  
  


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  YAMAHA YFZ R SPECIAL EDITION 450 cc (2010–2013)

  
  


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  YAMAHA YFZ X 450 cc (2010–2011)

  
  


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  YAMAHA YFZ X SPECIAL EDITION 450 cc (2011–2025)