JT Sprockets JTF1373.16 16-Tooth Steel Front Countershaft Sprocket Made from SCM420 chromoly steel alloy Heat treated and hand finished to meet or exceed OEM standards Outlasts any mild steel or surface hardened sprocket Each sprocket goes through 10 quality control checks before it leaves the factory 17 Tooth Front Countershaft Sprocket Made from SCM420 chromo steel alloy Heat treated and hand finished to meet or exceed OEM standards Outlasts any mild steel or surface hardened sprocket Each sprocket goes through 10 quality control checks before it leaves the factory 16 Tooth Front Countershaft Sprocket