Introducing the second generation Atlas cranks with 31 to 81 grams savings over the first generation model (depending on configuration) resulting in Race Face's light weight, freeride cranks. 822g (165x36T, w 68/73 + BB) 842g (165x36T, w83 + BB) Features Improved performance for 2012 featuring Race Face's EXI splined axle interface 50 grams lighter. DH performance at AM weightManufactured from Optim-AL. A strong fatigue resistant aluminium alloy Near net forged and fully CNC machined arms heat treated Cro-Mo axle Removable granny ring spider for chain guide use6mm of chainline adjustment - ideal for chain guide compatiblity Spacers allow for the use of shorter bolts, saving weight Built for FR/DHWeight 822g (165mm, 36T ring with BB) 68/73, 83mm