Marketing Color: Carbon Material: Steel Sprocket Position: Rear Sprocket Size: 520 Sprocket Teeth: 48 JT Sprockets are made from the latest generation of computer design and control metal cutting equipment for maximum durability. JT rear sprockets are made from the finest C45 high carbon steel. All sprockets are heat-treated and hand-finished to meet or exceed the highest possible quality standards. Induction hardened with black zinc finish available on certain sprockets. This item fits the following vehicle applications: 2005-2009 fits YAM TTR230 2011-2024 fits YAM TTR230 2001 fits YAM WR250F 2007-2009 fits YAM WR250F 2011-2013 fits YAM WR250F 2015-2024 fits YAM WR250F 1998-2000 fits YAM WR400F 2001-2002 fits YAM WR426F 2003-2009 fits YAM WR450F 2011-2024 fits YAM WR450F 1999-2024 fits YAM YZ125 2024 fits YAM YZ125 50th Anniversary Edition 2020-2024 fits YAM YZ125X 1999-2023 fits YAM YZ250 2024 fits YAM YZ250 50th Anniversary Edition 2001-2004 fits YAM YZ250F 2006-2024 fits YAM YZ250F 2024 fits YAM YZ250F 50th Anniversary Edition 2021-2022 fits YAM YZ250F ME Energy fits YAM Edition 2015-2024 fits YAM YZ250FX 2016-2024 fits YAM YZ250X 1999 fits YAM YZ400F 2000-2002 fits YAM YZ426F 2003-2024 fits YAM YZ450F 2024 fits YAM YZ450F 50th Anniversary Edition 2021-2023 fits YAM YZ450F ME Energy fits YAM Edition 2016-2024 fits YAM YZ450FX