Brand New replacement rear drive chain compatible with the COLEMAN CT200U, CT200U-EX, BT100X mini bike <p> part number for Coleman BT200X: 23315 <p> part number for Coleman CT200U, CT200U-EX: 23315/HS200 The chain size is 420 x 90 links long and includes connecting master link. <p>These bikes use two chain. this is the Rear long chain. Not the short Jackshaft chain. <P> Ship from USA warehouse