Shimano built the FC-M9220 for Enduro World Series abuse, and it shows in the details. A thicker enduro-specific steel spindle raises the bar for durability and big-hit survivability, while Hollowtech II forging keeps the arms stiff and light so your power goes into the ground instead of flexing away. This is the crankset that gets you through the rowdiest sections without flinching.

It runs a 176mm Q-factor for race-familiar ergonomics and a 55mm chainline for wide frame compatibility. The 24mm spindle works with Shimano threaded and Press Fit bottom brackets, and it is direct-mount for the SM-CRM96 ring in every size from 28T to 38T. This listing is for the crank arms only, so pick your length below and add a chainring and bottom bracket to complete the build.