Fulcrum Rapid Red 900 DB 2WF 650B Gravel WheelsetFulcrum Rapid Red 900 DB 2WF Gravel Wheelset The Rapid Red 900 DB 2 Way fit wheels has been designed for b road gravel riding in mind. Unpaved roads, paths and dirt tracks call for a wider rim channel , the 900 feature a 23mm inner rim with a low, ultra resistant 24mm rim, to cushion blows and deliver superb ride comfort, regardless of the stresses to which it is exposed. The profile of the wheel enables tubeless ready tyres of between 30 and 46 mm to