- Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during mid-season
- Kits include a top-of-the line MLSS head gasket and two or more premium-quality base gaskets of different thicknesses to optimize engine compression ratios
- Gives the rider a choice of using standard gas with stock compression, or race gas with a higher compression
- Kits do not include valve stem seals, rubber parts, shims, or other fiber gaskets
Yamaha -- YZ 250 -- (2016, 2001, 2009, 2012, 2002, 2005, 2011, 2014, 1999, 2000, 2010, 2013, 2003, 2006, 2004, 2008, 2007, 2015, 2018, 2023, 2021, 2022, 2017, 2019, 2020); Yamaha -- YZ 250 X -- (2020, 2018, 2017, 2019, 2022, 2016, 2021)