The only locking thru-axle track mount for truck and van tracks each one uniquely keyed. Introducing the DropTop; our next locking fork mount that grows upon years of feedback and use. The DropTop utilizes a TPU overmolded shim to allow for both 12mm and 15mm axles to fit without the need for switching shims out. It is based upon the same clamshell design as the DriveShaft series which allows for easy loading and adapts to minor differences in axle diameter or contouring. The DropTop also includes mounting holes for both horizontal and vertical mounting orientations so it replaces both the DriveShaft HM and DriveShaft Track Mounts. Available starting March 15.