Alone kimble v2 sprocket the guys from alone bmx developed one hell of a sprocket with the alone bmx kimble v2 sprocket 25 teeth adaptors for 19mm an 22mm axles four fresh colors 7075 t6 alloy what else should i say in combination with that prize the alone bmx kimble v2 sprocket is probably the best sprocket out there specifications 7075 t6 aluminium 18 thick 25 tooth only full cnc anodised colours 23 8mm bore with 19mm and 22mm adaptors axle diameter 23 8mm buy alone kimble v