New 135 and 155mm length now available. 10% Off R22 Retainer Rings when you order a chainring with your new Evo cranks. Continued development of Hope's popular crankset has led to the EVO Edition, a new benchmark for aluminium MTB cranks. The latest FEA analysis tools, rigorous lab testing and extensive field-testing mean the EVO crankset is both lighter and stiffer than the previous model. Now featuring a self-extracting axle/arm interface, simplifying fitting and removal. Forged and CNC machined 7150 series aluminium alloy crank arms. Lighter and stiffer than previous model. Self-extracting axle/arm interface for ease of fitting. Versatile Spline mount for chain ring or spiderless chain rings. 135, 155, 165, 170 and 175mm length. 30mm oversize 7075 aluminium alloy axles. Arms available in Black, Blue, Bronze, Red, Silver, Purple and Orange. Range of axle length options available to accommodate most bikes from XC, DH and FAT bikes. Weight: 560g, (170mm Inc axle).