RockyMounts Drop Top Compatible with 12mm 15mm & 20mm Thru-Axles

If you purchase mutiple DropTops and/or other racks, we will automatically key the entire order togther so every product will have matching locks.

Introducing the DropTop; our next locking bike 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, it replaces both the DriveShaft HM and DriveShaft Track Mounts.

The only locking thru-axle track mount for truck and van tracks
Compatible with 12mm, 15mm, & 20mm thru axles up to 110mm wide (for 20mm, shims must be removed)
Vertical and horizontal mounting positions
TPU overmolded shim eliminates the need to switch out shims for 12mm or 15mm axles
Anti-Theft: TPU surface provides sufficient friction to stop the axle from being removed when DropTop is firmly clamped and locked
Can fit QR bikes with our 9mm QR with Dummy Axle - sold separately
Wide mouth opening to easily load your bike and a locking T-Bolt that adjusts for a tighter hold so the thru-axle cannot be removed when locked
Carries 1 bike, up to 45 lbs
Lock core, keys, and Track Hardware Included
Track Plates measure 24mm x 35mm x 6mm thick with an M6 x 1mm tapped hole and can be installed in either orientation. See drawing in images
Fits all Toyota Tacoma and Tundra Bed Rails 2010-2024
This does not fit L-Track bby USA Cargo Control, you need this adapter plate as well, click here

For 9x100mm quick release or bolt on axles only, you can use the Dummy Axle with your DropTop.

Fitment Note: Due to the nature of the DropTop clamp not bracing the fork legs outward, there will be play when used with Mavic Speed Release and Specialized 12mm forks with an oversized non threaded fork leg. For those instances, please use a HotRod instead

Toyota Fitment: DropTop Mounting Hardware slides into the Factory installed rails on Tacomas & Tundras and most “track” systems (See dimension chart below for hardware specs)