September 26, 2025
Description
NEW: As per multiple requests, I added a SmartTag 2 option as well. I have not printed it yet, and would appreciate if someone could test it. There is no print profile, but 3d files are available to download. Thanks!
(Please note that a M3 x 6 mm thread forming screw (B-AA142) is needed for the SmartTag 2 option)
This is the official B-RAIL System mounting rail with a hidden AirTag/SmartTag2 compartment.
It’s designed to fit any standard bottle cage mounts on your bike, allowing you to attach a wide range of accessories and swap them out in seconds. Thanks to the rear latch, clipping accessories on and off is fast and effortless.
For a complete list of available accessories, please visit the Official B-RAIL Mounting Rail page.
I'm also working on developing even more accessories — so if you have ideas or suggestions, share them in the comments and I might just make them a reality.
License:
Standard Digital File License
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