Yes, a campy. Question: Can I use a double or triple crankset with this one chainring? This 53t chainring has no ramps or pins. I want to run a 1/8th chain. This is an area in which I am blind and feeling my way. Considering a Campy
Veloce 170mm. Hope this is 135 BCD

I don't think that I will have to change the bottom bracket. It is square tapered.