Race-Driven Front and Rear Steel Sprockets. You will receive 1 - 15 tooth front steel sprocket and 1 - 48 tooth rear steel sprocket, these sprockets have a 520 pitch and will fit the following: KTM 250 SX 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025. All Race-Driven Sprockets are manufactured to meet or exceed OEM specifications and are produced using hardened S45C steel to give you years and years of trouble free service. Please make sure when purchasing sprockets you do so according to your
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