Ron,the French pedaling chain on the Moby is slightly different,but B.J. said the other would work.What I was concerned about was your saying a Motobecane rear sprocket seemed to interchange with a Batavus.I'd be very sure about that switch before I'd take a chance on losing some leg meat to a busted chain! You see,there may be some difference that you don't see with the caliper,and what's a phone call to 614-299-0550 gonna cost? Matter of fact,they've got a toll-free up there but I don't have it on me.Well,my conscience is clear on the matter,`cause if I would have stayed silent and then read a post where somebody got hurt bad,THAT would bother me. BYE!