Originally Posted by
Aubergine
One wonders whether the issue is not with Tubus (I use their rear rack and it fits fine) but with Soma? The rack connectors on that frame are too high for *any* rack, I would argue.
At Trek, when we spec'ed bikes to include a rack as standard equipment, we sent samples of each size frame to Blackburn, and they customized racks to fit the frames. You can do that when you commit to ordering mass quantities of their product.