Vortex 428 Rear Sprocket, Black fits RM85 or YZ85 , 40 or 42 tooth


Black Vortex aluminum sprocket for road racing a RM85 or YZ85, 40 or 42 tooth.



Fits RM85 and YZ85

-Inproves performace by reducing the drive system’s rotating mass
-Lightweight 7075 T6 aerospace aluminum
-High tensile carbon steel
-Precision CNC machined individually for tightest tolerances
-Ideal Toothe Design TM for perfected chain hold and release
-Maximum Wear Resistence

Additional information

Number of teeth

40, 42

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