Athena 58mm 144cc Big Bore Cylinder Top End Kit!

This is the best and most reliable big bore kit on the market!

Fits Yamaha YZ125 2 Stroke Dirt Bikes

 Years 1997 1998 1999 2000 2001 2002 2003 2004

This kit includes:

• 58mm 144cc Nikasil Athena Big Bore Cylinder
• Athena 58mm Coated Piston Kit (Includes, Piston, Pin, Rings & Clips)
• Athena Complete Top End Gasket Set
• Athena Head
• Athena Head Stud Kit
• Athena Power Valves

All parts come with warranty.

We ship worldwide & ship all domestic orders free!