Originally Posted by
Sweetheart14
We have not officially tested them for weight limits. We did put them in a 20 ton press. The crank arm broke and the extender didn't. But once the crank arm broke we didn't test it an further. Hope this helps.
I just bought two sets in the 20mm size. I don't think the extenders would break as the extenders look very solid. However, does the extender cause the cranks to break? If the crank is more likely to break, how much stress can the crank take with the extenders on before it breaks?
I ride casually and I am not too concerned about. I don't put a ton of torque on my cranks. Sometimes when I climb hills does it put some stress on the cranks. I will do a long term test on these to see how it turns out.