Surly Track Cogs are threaded the same as a BMX freewheel (1.375 x 24 tpi right-hand threads). This means that they will fit on single-speed rear hubs, as well as...
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...
Surly cassette cogs are designed first and foremost for single speeding, but being that we’re Surly, we bumped up the versatility a bit. At the base, the cogs are 4.35mm wide,...
Our cassette cogs are designed first and foremost for single speeding, but being that we’re Surly, we bumped up the versatility a bit. At the base, the cogs are 4.35mm...
