02-08 Honda CRF450R
09-16 Honda CRF450R CRF 450R 100mm 490cc Big Bore Cylinder Athena CP Piston Kit

Part #: (A-CRF450R-0916-100-CG / M34114)
Starting from $579.99

Athena / CP Carrillo / AZ Quad Parts Conglomerate Kit

100mm 490cc Big Bore Cylinder Top End Kit!

This Is The Best Big Bore Kit On The Market!

Fits Honda CRF450R

Years 2009 2010 2011 2012 2013 2014 2015 2016

This kit includes:
  • 100mm 490cc Nikasil Athena Big Bore Cylinder
  • CP Carrillo Piston Kit (Includes, Piston, Pin, Rings & Clips) (Designed KMS Performance & AZ Quad Parts)
  • Select Compression Ratio Below
  • Piston Kit Will Handle Up To +2mm Bigger Valves!
  • Athena Complete Top End Gasket Set

This is a bolt on kit with no machining required. It will work with your stock head and valves. All parts come with warranty.


Price: $579.99

FREE STANDARD SHIPPING is available in all US lower 48 states, APO addresses, and Puerto Rico via USPS or UPS. (*Exceptions apply for Alaska and Hawaii.)
Free standard shipping means we will select an option that gets you your parts as soon as possible while still being economically priced.

*Shipments to Alaska and Hawaii are free as long as the parts will fit in a USPS Priority Mail Flat Rate box or envelope.
For any other type of shipping there will be a charge.


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