Types of BMX Cranks

BMX cranks are the crucial link between your BMX bike pedals and the BMX bottom bracket. In the realm of freestyle BMX, cranksets are engineered for durability, playing a pivotal role in propelling the bike forward. Unlike race BMX bike cranks, which are typically crafted from aluminum or carbon fiber, freestyle variants are constructed using steel or Chromoly.

Freestyle BMX cranksets come in three primary types: 1-piece, 2-piece, and 3-piece. Entry-level bikes and older models often feature 1-piece cranks, anchored by bearings. Meanwhile, 2-piece cranksets, equipped with a single crank bolt, boast easy installation and integrate a spindle within one of the crank arms. The most prevalent style among freestyle BMX bikes, 3-piece cranksets, though heavier, offer robustness exceeding that of 2-piece sets and generally possess a slightly wider profile.

Selecting the Right Length of BMX Crank Arms

BMX crank arms are available in a spectrum of sizes ranging from approximately 125mm to 190mm, with a preference among most riders for lengths of 170mm or 175mm.

Determining the optimal length hinges on personal preference and riding style, influencing performance significantly. For those favoring high-speed rides, longer crank arms are recommended, while street riding enthusiasts may benefit from smaller arms, providing improved clearance.

Prior to purchase, ensure compatibility between your BMX crankset and BMX pedals, and ascertain the size of your BMX bottom bracket.