The pie plate / dork disk between the cassette and spokes on my bike cracked from age and I had to remove it. I'd like to get a replacement but I can't seem to find any online. Also, do I just need to get one based on the largest cog or is there anything else to consider?
A google search of Spoke Protector led to several suppliers. The size is based on largest cog. Most however are spec'd by overall dimension in inches not tooth count. There are two mounting styles I am familiar with. One type snaps onto the hub. There is a difference between freehub and freewheel mounting. The other variety mounts by snapping onto the spokes. I can imagine that you need one that matches the spoke count of the wheel.