AM strength net-forged from 6066-T6 alloy crank arms with reinforced CrMo steel I-lock pedal inserts * 3mm of chainline adjustability ensures the ability to achieve perfect drivetrain alignment even with difficult suspension frame designs and ideal for fine-tuning shifting chainguide set-ups * Extended spline interface length on the fixed LH crank arm ensures long term durability and no loosening or creaking even from big hit riding * Features the "EXI" interface external bottom bracket system for easier crank installation and removal with standard tools and fully adjustable chainline * Its middle-weight AM BB spindles are stronger than some of the competitors" DH spindles.