With a heat-induction hardened high carbon steel outer ring combined with a lightweight, aviation grade ergal 7075-T6 aluminium core, the JT Twinstar Sprocket lasts 6 times as long as its full aluminium counterparts.
Fits: BETA RR250 2T 2013-2019 RR250 Racing 2T 2018-2019 RR300 2T 2013-2014 2016-2018 RR300 Racing 2T 2017-2019 RR350 4T 2012-2019 RR390 4T 2015-2019 RR400 4T 2010-2014 RR430 4T 2015-2017 RR430 Racing 4T 2017-2018 RR450 4T 2010-2014 RR480 4T 2015-2018 RR480 Racing 4T 2017-2019 RR520 4T 2010-2011 Beta RR 2T 200 2023 RR 2T 250 2023 RR 2T 300 2023 RR 4T 350 2023 RR 4T 390 2023 RR 4T 430 2023 RR 4T 480 2023 Honda CR125R 1983 1987-2007 CR250R 1990-2006 CR500R 2000 CRF150F 2004-2020 CRF230F 2004-2015 CRF250R 2004-2009 2011-2020 CRF250RX 2019 CRF250X 2009-2010 CRF450R 2004-2012 2014-2020 CRF450RX 2018-2020 CRF450X 2006-2007 2009-2010 XR250R 1996-2005 XR650R 2000-2006