- Big Bore Kit
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- Big Bore Kit (98)
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- For Linhai Lh300 (5)
- Piston (11)
- Piston Kit (69)
- Top End Kit (6)
- Top End Rebuild Kit (28)
- Other (2675)
03-24 Yamaha YZ250 YZ 250 72mm 300cc Athena Big Bore Cylinder Top End Piston Kit
Athena 72mm 300cc Big Bore Cylinder Top End Kit! This is the best and most reliable big bore 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. 72mm 300cc Nikasil Athena Big Bore Cylinder.
Athena 72mm Coated Piston Kit (Includes, Piston, Pin, Rings & Clips). Athena Complete Top End Gasket Set.