Athena Piston Kit S4C05800002A

Two-stroke pistons are made from 4032 siliciumFour-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistonsBoth include 3% copper in materials for better heat...

Includes rings, clips and pinEasy-to-follow step-by-step installation instructions Honda -- CRF250X -- (2009, 2008, 2006, 2007, 2005, 2004); Honda -- CRF250R -- (2008, 2009, 2004, 2007, 2006, 2005)

Includes rings, clips and pinEasy-to-follow step-by-step installation instructions KTM -- 250 EXC-F -- (2015, 2014, 2016, 2020, 2018, 2017, 2019); KTM -- 250 SX-F -- (2014, 2015, 2013, 2021, 2020,...