Size A Standard Bore 66.35mm Piston Kit for Yamaha 1999-2023 YZ250 66.4mm
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Size A Standard Bore 66.35mm Piston Kit for Yamaha 1999-2023 YZ250 66.4mm
Size A Standard Bore 66.35mm Piston Kit for Yamaha 1999-2023 YZ250 66.4mm
Manufactured by
Kit Includes piston, rings, pin, clips (you get exactly what is pictured)
Cast piston has super-high silicone content for additional strength
Piston skirts are Molybdenum Teflon coated to minimize resistance/wear and provide extended life
Piston dome is anodized for superior heat resistance and longer lifespan
Kit is for standard bore size – 66.40mm
Size A piston is 66.35mm
Compression ratio of 10.9:1
Compatible with Yamaha models below:
1999 YZ250
2000 YZ250
2001 YZ250
2002 YZ250
2003 YZ250
2004 YZ250
2005 YZ250
2006 YZ250
2007 YZ250
2008 YZ250
2009 YZ250
2010 YZ250
2011 YZ250
2012 YZ250
2013 YZ250
2014 YZ250
2015 YZ250
2016 YZ250
2016 YZ250X
2017 YZ250
2017 YZ250X
2018 YZ250
2018 YZ250X
2019 YZ250
2019 YZ250X
2020 YZ250
2020 YZ250X
2021 YZ250
2021 YZ250X
2022 YZ250
2022 YZ250X
2023 YZ250
2023 YZ250X
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