Gusset Micro 1er Single Speed Conversion, 12/13t

Gusset Micro 1er Single Speed Conversion, 12/13t: Micro-1er now available for a compact one speed drivetrain Converts any 8-9sp HG splined cassette hub to a single speed. Includes 2) deep tooth CrMo steel 3/32" cogs, 1) 14mm spacer, 1) 19mm spacer and a lo