That's odd and annoying.
I've got a set on a bike plus one or two lock rings from different cranks, I could see if any of them will fit? I've never seen one for sale separately, only cranks with cracked ones. I think they're difficult to remove.
Would you be willing to sell them as they are? If you can't find a lock ring?
I'm probably not going to sell them as I just found some Pace and Kooka rings plus custom spacers for them. They are going on one of my project biked which might end as a wall piece. But in the end its all a question of money
Tharts the bike that are planed to use them. The fork is just a place holder and will get a fully refurbished SL Ti.
I had a set with a cracked one, asked around and drew a blank. Contacted Race Face who also didn't have any but they did sell me some retro cranks very cheaply which I thought was great of them.
I seem to recall finding out that they are not just screwed on but also bonded which is I guess why they are hard to remove and are often cracked due to attempts to do so?
Does anyone know if the threads are metric, imperial or custom?
Maybe I can find a thin stock nut that would fit.
The bike is probably going on my office wall, but I always set my goal to rebuild the bikes so that they are actually ridable and time correct as close as possible.