RFX Pro Front Sprocket (Black Zinc) Yamaha YZ250 99-20 YZF400-450 98-20 RFX Pro Series Black Zinc Front Sprockets are CNC machined to the tightest tolerances from high tensile steel and case hardened...

JT Self Clean Lightweight Front Sprocket Yamaha YZ250 99-23 YZF400-450 98-23 Computer-designed to achieve ultimate strength at minimum weight JT combines leading-edge technology with top materials...

RFX Race Front Sprocket Yamaha YZ85 02-23  RFX Front Sprockets are CNC Machined from High Tensile Steel and case hardened to 60 Rockwell to resist wear. RFX sprockets also feature lightening...

RFX Race Front Sprocket Yamaha YZ65 18-23 RFX Front Sprockets are CNC Machined from High Tensile Steel and case hardened to 60 Rockwell to resist wear. RFX sprockets also feature lightening holes on...

RFX Race Front Disc (Black) Yamaha YZ125/250 92-00 YZF400/426 98-99 RFX Race Series Discs are designed and tested at the highest level by top World and British championship race teams. Precision...

RFX Race Front Sprocket Yamaha YZ125 05-20 YZF250 01-20 RFX Front Sprockets are CNC Machined from High Tensile Steel and case hardened to 60 Rockwell to resist wear. RFX sprockets also feature...