Lightweight 2-Piece Design 11-Speed Chainset 2-Piece Design Forged & Anodised Aluminium Crank Arms Keep Weight Low The Chainring Teeth Have Been Developed To Work In Conjunction With Hg-X 11-Speed Chains For Increased Contact To Provide Greater Efficiency & enhanced Power Transfer Bottom Bracket Bearings Are Spaced Wide Apart, Enabling The Use Of Larger Bearings & An Increased Axle Diameter Can Be Used With Shimano External Or Press-Fit Bottom Brackets The System Allows For Easier Installation, Adjustment, & Maintenance Lightweight Anodised Sg-X Aluminium Chainrings For Smooth & Precise Shifting