Fits Yamaha WR450F Dirt Bike Models 

Years 2007 2008 2009 2010 2011 2012 2013 2014 2015

Add Amazing & Reliable Power With The Best Components In The Industry!

This Complete Big Bore Top End Kit Includes:

• Athena 98mm Big Bore Nikasil Plated Cylinder
• Larger Water Jackets For Superior Cooling!!
• CP Carrillo 13.5:1 Piston Kit (Includes Piston, Rings, Pin & Clips) (Used With Pump Or Race Gas)
• Athena Complete Top End Gasket Kit

Piston uses pump gas or race gas.

We ship worldwide & ship all domestic orders free!