Our track cogs are designed for fixed gear applications and are compatible with most English, Italian and Japanese hubs, including the Surly New Track Hubs. The thread base is 7.4mm wide for maximum thread engagement while maintaining enough room for a track lockring to be threaded on the outside.
Compatible with standard ISO-threaded (1.375" x 24tpi) hubs
Machined from SCM415 Chromoly steel
Heat-treated and chrome-plated
Works with 3/32" or 1/8” chains
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