I am greatly disappointed by this official material. I tried to reassemble it on my bike which is a rockrider 5.1, but the small-pitch system does not offer much opportunity for mounting. Furthermore the system is not enough gripping, and if you have the misfortune of wanting to shake it thoroughly, plastic deforms and the holding is not better ... I do not recommend this model, and I think look a little more on the unofficial material and ferrous material.