This brand new Racing 5 has been brought in for 2015 with one purpose in mind. They have been designed with a slightly wider rim to facilitate an easier fitting of 25c tyres. This CX version has a double seal in the hub to keep the wheels from getting dirt & dust inside during Cyclo-Cross racing & during winter training. Racing 5 are designed for everyday use & training. An optimum proposal from Fulcrum which guarantees excellent quality. Oversized hubs with flanges for blade hammer-head spokes & sealed high-quality bearings ensure smoothness. The rear wheel incorporates a new single-piece body which embodies the freewheel body & pawl carrier in a single component resulting in a considerable weight reduction. Fulcrum 2:1 spoke ratio on rear wheel double the number of spokes on the drive side for greater wheel stability & enhanced power transfer in the rear wheel. 20 radial aero spokes on front wheel 24 on rear. The wheels have two oversized spokes to balance the concentration of the rim joint material during wheel rotation, Fulcrum call this Dynamic Balance. The Racing 5's also have a deep upper bridge on the rim to facilitate clincher tyre fitting. Weights: Front 753g Rear 892g