Aluminium or Carbon Cranks
As with many components on the bike, the question of materials also arises with cranks. Aluminium and carbon dominate here. Aluminium cranks have proven themselves over many years. They offer a good compromise between stability, weight and price. Thanks to modern manufacturing techniques, there are hollow crank arms that are amazingly light without sacrificing stability. If you want it to be even lighter and your budget allows it, then carbon fibre is probably your material. Carbon cranks are very popular, especially on road bikes, as they are often stiffer. Cranksets made of titanium or steel are rather rare, but are very popular, especially on custom bikes.