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Cranksets and crank arms

The main components of the front chainring are bicycle crank arms and gears. When choosing a new front chainring block, you should take into account how many chainrings your existing unit has (can be 1, 2, or 3), the number of teeth on each gear, and perhaps most importantly, how it connects to the cranks (e.g. One-Piece/BMX, square taper, Hollowtech or Octalink). In more expensive models, if the gears wear out or if you want to change the gear ratio, they can be replaced. In racing where every second counts, crank length can matter as well. It is usually 170, 172, or 175 millimeters. The longer the bicycle crank arm, the harder it is to pedal.