Each cam has a rubber insert on the section of the cam that is in contact with the rack’s tubing. This creates a “sticky” connection with the rack preventing the pannier from any movement forward or backwards while riding.
The effectiveness of our Cam-Lock® mounting system at keeping your pannier solidly locked to your rack is what makes it possible for us to remove the lower bungee and hook without compromising the performance of the mounting system.
What this means is that we can remove the lower hook with no significant side effects. The pannier will not flap around, as soon as you have a bit of weight in it, it will stay in place just as well as the panniers equipped with the lower hook.
“The pannier mounting system really is the best: once used a few times for the new stiffness to wear off, the camlocks just smoothly do their job – excellent! I have travelled some rough roads and the pannier is completely secure. I have had no issues at all with the lack of a third anti-sway clip – a little bit of weight in the bag and it sits securely.” Steve B. UK
Excerpt from Signature V urban pannier. review