If we are already building a custom frame for you, it is a good time to fit BTCs as well. The cost for this is £495, and includes fitting the BTCs and cable splitters which prevent cables from becoming tangled.
We can custom-build almost anything, and BTCs are available to suit tubes from 3/4” to 2” so the possibilities are endless.
For example, the touring cycle above had BTCs fitted at the building stage, and both these bikes below started off as a Surly Long Haul Truckers: