05-21 Yamaha YZ125 YZ 125 X 54mm Athena Piston Cylinder Head Top End Rebuild Kit

  

Athena 54mm Stock / Standard Bore Cylinder Top End Kit! This is the best and most reliable rebuild kit on the market!

Fits Yamaha YZ125 2 Stroke Dirt Bikes. Years 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021. Also Fits Yamaha YZ125X Years 2020 2021 2022. 54mm 125cc Nikasil Athena stock Bore Cylinder.

Athena 54mm Coated Piston Kit (Includes, Piston, Pin, Rings & Clips). Athena Complete Top End Gasket Set. This is a bolt on kit with no machining required.