Mavic Open Pro CD Rims Fixed Gear Track Bike Wheels Wheelset 32h Formula Hub Review Posted: August 20, 2018 Under: Bike Wheels By ChillyBoulder no Comments New Pair Mavic Open Pro Rims Hard Anodized Finish 700c rims 32 DT 2.0 spokes – smooth rolling Formula, sealed bearing fixed/fixed flip flop Hub. 100mm Front Spacing 120mm rear spacing. Front: 979 grams Rear: 1028 grams