Athena Stock Bore Cylinder Top End Kit With Wiseco 12.5:1Forged Piston Kit!

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

Fits Yamaha YZ450F Dirt Bikes

Years 2018 & 2019 ONLY

This kit includes:

• Athena Nikasil Stock Bore Cylinder 
• Larger Water Jackets For Better Cooling! 
• Wiseco Forged & Coated 12.5:1 Piston Kit (Includes, Piston, Pin, Rings & Clips)
• Athena Complete Top End Gasket Set With MLS Head Gasket

It will work with your stock head and valves.  All parts come with warranty.

We ship worldwide & ship all domestic orders free!