AERO BMX Freewheel 16T (single speed) Features:Material: SteelGear Teeth: 16TColour: BrownFit: any single speed chainSingle-speed bicycles are equipped with a freewheel cog, which allows rotation in one direction while locking up in the opposite direction. When you pedal on a single-speed bike, the cog transfers the motion to the rear wheel. However, when the rear wheel’s speed surpasses that of the cog, it disengages, similar to the functionality of gears in multi-speed bicycles.
