MODEL : TL016 CRANK MODEL : RD-2 CRANK MATERIAL : FORGED AL-6061-T6 CRANK FINISH : ABK BCD : 130MM LENGTH : 165-175MM CHAINRING : 53-39T CHAINRING FINISH AND MATERIAL : 53-39T : HBK+CNC,ALLOY SPEED : 9/10S CHAIN LINE:45MM B.B.AXLE : 113MM