Offers a lighter weight, compactdrive Singlespeed \n Converts any 810sp HG splined cassette hub to Singlespeed\n Extra wide spline interface prevents cog from deforming hub splines\n Cog is CNC machined CrMo, 1/2"x5/64"
- model:
- 40-Series lower
- S.H.I.S.:
- EC44/33
- upper/lower:
- lower
- stack:
- 12mm