-1 JT Front Sprocket JTF565SC.12 to fit Yamaha YZ450 FX-G,H 16-17     JT Sprockets is the world's leading manufacturer of aftermarket sprockets, constantly raising the industry's standards for quality and service. Committed to supplying the most durable, best quality sprockets available in the marketplace worldwide. JT produce and sell more sprockets than all the other aftermarket brands combined. Features Made from SCM420 Chromoly Steel Fully heat treated for higher wear resistance Meets Japanese OEM standards Optimum design for light weight and strength JT sprockets used by top teams in - British Superbike Championship, Isle of Man TT, EU and British MX Championships + many more!               The sprocket supplied is one tooth size below the standard 13 tooth sprocket size!