RaceFace Ride Mountain Bike Crankset Crank arms are net forged from 6066 aluminum with aggressive styling for a high strength to weight ratio 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 995g with triple rings and BB Features the 'EXI' interface external bottom bracket system for easier crank installation and removal with standard tools and fully adjustable chainline Features a lightweight, forged and CNC machined CrMo steel EXI spindle.