Marketing Color: Natural Material: Steel Sprocket Position: Front Sprocket Size: 420 Sprocket Teeth: 15 Computer-designed to achieve ultimate strength at minimum weight. JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value. Every sprocket meets or exceeds the highest possible quality standards set for the motorcycle industry. Sprockets are heat-treated and beadblasted to reduce material surface tension. Front sprockets made with C45 steel and SCM415 chromoly steel alloy; rear sprockets made with top-quality-grade C45 high-carbon steel. NOTE: When installing sprockets which differ from OEM sizes check for proper clearances before operating.. Lightweight Front This item fits H-D the following vehicle applications: fits HON CRF150R 2012-2021 fits HON CRF150R 2007-2009 fits HON CRF150R Expert 2012-2021 fits HON CRF150R Expert 2007-2009