The first MTB crank specifically designed for 2x10 weighing in at 694 grams delivers amazing performance and durability with no penalties in weight. 2mm thicker than the competition the oversized chainrings are CNC machined 7075 Aluminum blanks. Unparalleled stiffness is delivered by an increased Bolt Circle Diameter (BCD) and a two-piece insert-molded carbon composite construction. The XX Crank geometry provides a narrow 156mm Q factor efficient chainline and beveled crank arms to maximize clearance. Chainrings: 26-39 teeth or 28-42 teeth. 694 grams. 10 speed.