17-25 Honda CRF450R
17-22 Honda CRF450R CRF 450R 100m Big Bore Cylinder 14.3:1 Race Gas CP Piston

Part #: (A-CRF450R-1722-100-CG / M456127)
Starting from $979.99

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 And Is the Best Set Up For Drag Racing!!!

Fits Honda CRF450R

This kit includes:
  • 100mm 490cc Nikasil Athena Big Bore Cylinder
  • Larger Water Jackets To Keep The Motor Cooler!
  • CP Carrillo Piston Kit (Includes, Piston, Pin, Rings & Clips)
  • Custom 14.3:1 Compression Ratio (RACE GAS OR ALCOHOL ONLY)
  • Piston Kit Will Handle Up To +1mm Bigger Valves!
  • Athena Complete Top End Gasket Set

For the most reliability and longevity we recommend installing this kit with a new OEM crankshaft or preferably with our CP Carrillo heavy duty rod. This kit must be installed by a qualified professional and dyno tuned to ensure the proper AFR. Failure to adhere to our recommendations can lead to possible warranty denial.

We ship worldwide & ship all domestic orders free!


Price: $979.99

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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