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...
