Originally Posted by DiegoFrogs

You get a front derailleur that has the stop integrated into the design of the derailleur. I have a Suntour Cyclone like this, and there are many others. Then, you run housing between the stops.

Originally Posted by fietsbob

There are clamp on double cable guides , they pass the cable over the BB.. Campagnolo made them too .

where is the stop on the chain stay? there are clamp on ones for that too.