A single-speed bike, also known as a fixed bike, has one cog attached to the rear wheel, which is powered by a chain and chainring with pedals. You pedal the chainring, the chain spins the cog ...

When shopping for chainrings or upgrading the ... boost crankset or non-boost option on your bike. Related: Long and Short Cage Derailleurs Explained Related: What Do 27.5+ and 29+ Mean on a ...