- Two-stroke pistons are made from 4032 silicium
- Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons
- Both include 3% copper in materials for better heat resistance
- All pistons are forged using a precision heat-treatment process that allows for production tolerances of just .005mm
- Forged piston tooling allows for the lightest available product
- Kits include antiwear coated piston, rings, pin and circlips
Yamaha -- YZ 250 -- (2003, 2016, 2001, 2009, 2012, 1999, 2000, 2010, 2013, 2004, 2015, 2014, 2002, 2011, 2008, 2007, 2006, 2005, 2020, 2021, 2023, 2022, 2017, 2018, 2019); Yamaha -- YZ 250 X -- (2021, 2020, 2022, 2016, 2018, 2019, 2017)