Modular Lightweight aluminum DH and Enduro crankset Forged and precision CNC machining with advanced bonding technology Hard anodized arms for increased durability Forged AL7050 BB392EVO spindle AL7075 100% CNC chainrings MODULAR Crank System features a built-in adjustable chainline* Chainline 52-55mm Sold as armset rings, sold separately Weight 620 grams