BMX Cranksets

What Defines a BMX Crankset?

BMX cranks are the metal arms linking bike pedals to the bottom bracket. Freestyle cranksets are built to withstand impact and play a crucial role in generating forward movement on a BMX. In contrast to race BMX bike cranks, which are crafted from aluminium or carbon fibre, freestyle cranks are manufactured from steel or Chromoly.

What Types of BMX Cranksets Exist?

For freestyle BMX, there are three primary types of cranksets: 1-piece, 2-piece, and 3-piece. 1-piece cranks rely on bearings for stability and are often seen on beginner bikes and older models. 2-piece cranks include a single crank bolt, are straightforward to install, and feature a spindle integrated into one of the crank arms. 3-piece BMX cranksets are the most prevalent type found on freestyle BMX bikes. While generally heavier, they offer greater solidity compared to a 2-piece crankset and are frequently slightly wider.

What Length Should My BMX Cranks Be?

Crank arms for BMX bikes range from approximately 125mm to 190mm, though most riders prefer a length of 170mm or 175mm.

The choice of crank arm length is largely a matter of personal taste, but it does influence your riding experience. For high-speed riding, longer crank arms are advisable. If street riding is your preference, opt for shorter arms for improved clearance.

Lastly, ensure that your crankset is compatible with your pedals and that you are aware of your bottom bracket's size.