Where can I find a 130 bcd single speed chainring with 58 or 60 teeth? I am attempting to setup a goldsprints setup using a very large front ring and a small rear freewheel.
Vuelta makes one, and you can buy it from them directly. If you prefer to buy locally and immediately, I'd suggest looking for a local shop that specializes in recumbents or trikes. Vuelta has a few distributors including KHS, so you should also be able to get many local bicycle shops to special-order you one.