The Euro Asia Superstar is virtually the same cog as it older brother the Gold Star, sans the titanium-nitride coating and added expense. The Superstar features precise machining and polishing for perfect roundness, threads and tooth profiles. This is the go-to cog for many pro and semi-pro track riders and makes an excellent fixed gear cog for the enthusiast. Combine with an Izumi V chain and a high quality chainring(Dura-Ace or Sugino Zen) to optimize the Superstar cog's performance. Available in 1/8" pitch only. Limited supply.