No22 Bicycle Co’s new coupler system gives you a travel bike with virtually no visible frame break. Even better, they’ve made it so you can run your Di2 wires and hydraulic brake hoses through the split without having to rebleed your brakes during reassembly!
If you’re looking for an ultra clean road, mountain, or gravel bike that’ll fit in a suitcase (or a trunk), this is the most functionally modern design we’ve seen yet! Here’s how they did it…
No22 Stealth Frame Coupler System
Until now, virtually every travel bike would run its shift and brake cables outside the frame, and use thread-together cable splitters to decouple the lines near the frame’s break. Hydraulic brakes were few and far between on travel bikes, mainly because there aren’t many good options for splitting the hose without introducing air into the system. And thus, then needing to bleed the brakes.
The most common frame coupler is the S&S system, which uses a threaded sleeve on the outside of the tubes to lock them together. It works fine and has decades of service to prove it.