18-22 Yamaha YZ450F
18- 20 Yamaha YZ450F & YZ450FX 102mm 500c Athena Big Bore Kit CP Piston

Part #: (A-YZ450F)
Starting from $679.99

Athena / CP Carrillo / AZ Quad Parts Conglomerate Kit 

102mm 500cc Big Bore Cylinder Top End Kit!

This Is The Best Big Bore Kit On The Market!

Fits Yamaha YZ450F & YZ450FXDirt Bike Models
Select Year & Compression Below

This kit includes:
  • 102mm 500cc Nikasil Athena Big Bore Cylinder
  • Larger Water Jackets Keep Your Motor Cooler!
  • CP Carrillo Piston Kit (Includes, Piston, Pin, Rings & Clips)
  • Athena Complete Top End Gasket Set
  • NGK Spark Plug

Must be installed by a qualified professional and dyno tuned for proper AFR

We highly recommend this kit be used with a Carrillo rod and a properly built crankshaft

IN STOCK, same day shipping, we don't list parts we don't have on the shelf!

We ship worldwide & ship all domestic orders free!


Price: $679.99

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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