Machined from chromoly, these singlespeed cogs are 5mm thick at the base, and reversible, with a 1mm shoulder on one side and a 1.5mm shoulder on the other to help dial in your chainline. Designed to fit Shimano Hyperglide style freehub splines like those found on our hubs. 17t = 45g/1.59oz

For Chimera Electric BMX riders:
Increasing 1 tooth rear cog = ~7% more torque/less speed
Decreasing 1 tooth rear cog = ~7% more speed/less torque