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 2022 2023 2024
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
- Wiseco Heavy Duty Crank Shaft
- Wiseco Heavy Duty Main Bearings
- Wiseco Wrist Pin Bearings
- Bottom End Oil Seals Kit
- Complete Motor Gasket Set
All parts come with warranty.
We ship worldwide & ship all domestic ordersfree!
