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 chain line adjustability ensures the ability to achieve perfect drivetrain alignment 995g with triple rings & BB Features the 'EXI' interface external bottom bracket system for easier crank installation and removal Features a lightweight, forged and CNC machined Chromo steel EXI spindle