Singlespeed & Fixed Gear"I still feel that variable gears are only for people over forty-five.
Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)
IRO uses "standard" threading, so stick with Dura Ace, EAI, Surly. Stay away from Phil, Campy and a few others, who use Italian threading. If you don't already have a lockring, use a Dura Ace.