Forged AL6061-T6 alloy crankarms in 165mm or 170mm length optionsStamped and CNC machined AL6061-T6 alloy 1/8` 48 tooth chainringGXP 22mm/24mm integrated spindle43.5mm chainline with thread-in GXP outboard bottom bracketBottom bracket not included170x48GXPBlack144x5B11/8`UPC/EAN/GTIN: 888571120224