Yamaha YZ250
03-21 Yamaha YZ 250 72mm 300cc Athena Big Bore Cylinder Crank Motor Rebuild Kit

Part #: (A-P400485100 / CBK0135)
Starting from $1,479.99

Athena 72mm Complete 300cc Big Bore Motor Rebuild Kit!

This is the best and most reliable rebuild kit on the market!

Fits Yamaha YZ250 2 Stroke Dirt Bikes

 Years 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

This kit includes:
  • 72mm 300cc Nikasil Athena Big Bore Cylinder
  • Athena 72mm Coated Piston Kit (Includes, Piston, Pin, Rings & Clips)
  • Athena Head
  • Athena Head Stud Kit
  • Hotrods Heavy Duty Crank Shaft 
  • Hotrods Heavy Duty Main Bearings
  • Hotrods Wrist Pin Bearings
  • Bottom End Oil Seals Kit
  • Complete Motor Gasket Set
This is a bolt on kit. All parts come with warranty.
We ship worldwide & ship all domestic orders free!


Price: $1,479.99

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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