Cable Doubler Chainring just install a Travel Agent

just install a Travel Agent and you’re good to go

adjusting cable pull or serving as a roller to work around tight frame geometries

To use our Travel Agent as a friction reducing roller simply route the cable on the outer edge of the wheel and it is smooth sailing for your brakes around tight bends

These adapters clamp on to the seat tube so you can use your braze-on derailleur on a conventional frame

derailleur

Cable Doubler Chainring just install a Travel AgentWe make two Cable Doublers. The first allows you to control two brakes with just one lever. The second allows you to control one brake with two levers. Why? Well, there are myriad applications: cyclocross, fixies, tandems, bike polo, tricycles, recumbents, adaptive cycling, those four person bikes you see on beach boulevards, and so on. You could even link them both together for ultimate redundancy! Cable Doubler 1: 2 Instructions Cable Doubler 2: 1