Not really, but it seems to work and I really couldn't find anywhere else to put them. I don't really like the idea of putting fuel in a backpack. The mounts are $5 bend-o-matic drink holders from the bicycle place. Easily replaceable. The only time I have had any ground contact is sliding the bike back down a hill climb that I had no business trying to attempt in the first place, and while dragging it (upside down) over sidehill downfall, again, that I had no business being on (without a chainsaw, hence, the mount). With the cans alone up there, I don't notice the little extra weight. They work great for premix/bar & chain lube!