Rear cogs - 1/8" cogs. Cogs specific for use on track, velodrome, fixed gear, fixie and single speed bikes.
Rear cogs - 1/8" cogs. Cogs specific for use on track, velodrome, fixed gear, fixie and single speed bikes.
Rear cogs - 1/8" cogs. Cogs specific for use on track, velodrome, fixed gear, fixie and single speed bikes.