For training I use a carbon hydrotail attached to the rails of my saddle. I just purchased a dash with carbon rails and was wondering if that would damage my saddle with 2 full bottles and a flat kit hanging off it?
I have the Dash Tri.7 and had the same question so contacted Dash. They replied that their rails were a mixture of Kevlar and Carbon. They also confirmed my suspicion that the rails were solid (so cannot crush).
Even so, I used the Bontraeger mount but only used one holder to keep the weight down. For IM Melbourne one rear bottle was more than enough