Tall Container + Airtag/SmartTag 2 - B-Rail System

Hello!
This is a new storage box  for your bike — an adaptation of my previous version, which was quite appreciated.

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. Thanks!

🔧 What’s new

• B-Rail compatible: Easily clips to the b-rail, instead of being permanently screwed form inside.
• Taller design: Now fits larger phones vertically.
• Relocated Tag compartment: Moved underneath the box instead of the lid. If you don’t use an Airtag, you can leave it empty — or stash a few secret coins there! 

🧰 Required hardware (also listed in the BOM)

• 1× 3 mm Stainless Steel Dowel Pin — 40 mm long (B-DA024)
• 1× Spring (B-BB014)
• 4× M3 Button Head Cap Self-Tapping Screws — 6 mm long (B-AA142)

⚙️ Features

• 💧 Water-Resistant – Protects your gear from rain and mud
• 🛡 Rigid Shell – Safeguards keys, tools, snacks, or electronics
• 🚴 Slim & Lightweight – Stays out of the way while riding

For a full list of compatible accessories of the B-Rail system, visit the Official B-Rail Mounting Rail page.

Enjoy your new Tall Container! 🚴

P.S. We’re always improving the B-Rail ecosystem — if you have ideas for new accessories, feel free to share them in the comments!