The Fendor Bendor Big gets the dirty job done. The all new attachment makes fitting without tools a breeze, to virtually every bike in just a few seconds. 

With the newly developed attachment construction, Fendor Bendor Big is now completely self supported and therefore possible to mount on bikes without the sideway support of the seat stays or the support of a brake bridge. You could also mount it above your caliper brake to avoid interference with the brake.