... 520/530 4)45# Steel Performance atv quad sprocket 11T~18T,loncin 250cc atv parts,shineray atv partsPerformance atv sprocket 11T,12T,13T,14T,15T ... 17mmT093109 teeth 420 sprocket,Inner hole 6 teeth 17mm-20mmT103010 teeth 420 sprocket,Inner hole 6 teeth 14mm-17mmT103110 teeth 420 sprocket ... teeth 428 sprocket,Inner hole 6 teeth 17mm-20mm 15 Tooth 520 20MM Sprocket for ATV Quad Dirt Pit Bike Parts