Reserve Wheels Reserve 40/44 GR Wheelset - 700, 12 x 100/12 x 142, Center-Lock, XDR/HG 11R, Carbon, DT 180 SPBringing cutting edge performance to the diverse needs of drop bar off roaders, Reserve's 40 44 GR gravel wheels are tailored for the demands of off road exploration and gravel riding, but with an aero focus. Leveraging Turbulent Aero technology, the 40 44 GR features a 40mm front paired with a 44mm rear, establishing it as the fastest and most stable Reserve gravel wheelset to date. Wider than the previous gravel wheels to allow for tires up to 50c