A crankset consists of the two arms and the gears that you rotate with your feet. It is the central part of the bicycle’s drivetrain that turns your leg power into motion. The arms, called cranks, connect the pedals to the chainrings or front gears.
They are attached to the bike frame through a bearing system called the bottom bracket. Cranksets come in different lengths to suit the height and leg span of various riders. Most are made from strong aluminum, but high-end models use lightweight carbon fiber. The number and size of the chainrings on the crankset determine your available gear range. Keeping the bolts tight and the bearings clean is essential for a silent and smooth ride.
For example, a cyclist upgrades to a lighter crankset to make their bike easier to handle on steep mountain climbs. This new part reduces the total weight of the bike while providing a very stiff and efficient platform. It is the main mechanical link between the rider and the wheels.
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