Fit type: Vehicle Specific Steel Front Sprocket. Part Number: JTF1539. Teeth: 14. Available Sizes: 14, 15 ... Heat-Induction Hardened Zinc Black Rear Sprocket. Part Number: JTR486ZBK DescriptionJT Sprockets ensures maximum durability and performance through accurate machining and using only the best grade of SCM415 chromoly steel alloy. Rubber Cushioned Steel Front Sprockets for sale in Lake Lillian, MN | Tracks USA (320) 382-6128 JT Sprockets 15 Tooth Front Sprocket Steel JT Sprockets Front Sprocket - JTF1539.15 For 2008-2017 Steel Drive Sprocket Outlasts any mild steel or surface hardened sprocket , 15 teeth steel sprocket JT Sprockets - JTF1539.15 - Steel Front Sprocket, 15T ... 15T Tooth Made from SCM415 chromoly steel alloy Each sprocket goes through 10 quality control checks before it leaves the factory.