15% lighter and stiffer than the previous model Now featuring a self-extracting axle-to-arm interface, simplifying fitting and removal Forged and CNC machined 7075 series aluminum alloy crank arms Unique expanding spline/arm interface Versatile spline mount for chainring/spider 30mm oversized axle Weight: 641g (arms, axle and 34 tooth spiderless ring) TECH SPECS Model Evo Length 155mm Direct Mount/BCD Hope Configuration 1x/2x Spindle Interface 30mm BB Shell Width 68/73mm Chainline 49/52mm Material Aluminum Color Red