Racing 5 road is the starting point. But the version bearing the “CX” acronym -saved for sports that don’t like clean roads- hides the real true “invisible” novelty inside the hub: a double coating that seals the bearings’ base guarantees smooth performance and long life, even under extreme conditions of use. Racing 5 CX with Shimano Inc. FW body is compatible with 10 and 11 speed sprockets.
When you push on the pedals, the rotational force on the sprocket induces a slackening of the freewheel spokes with a consequent loss of rim tension. This results in undesirable flex of the whole wheel and an unavoidable loss of energy. Fulcrum has solved this classic cycling problem with its 2:1 Two-to-One™ Spoke Ratio patent, by doubling the spokes in the critical zones.
As a result there are two spokes which carry out the function of one, slackening and torsion are limited and the transfer of the athlete’s power is much more effective.
Also, thanks to this system, spoke tensions are balanced more evenly between drive and non-drive sides and the fatigue life of the rim, hub and spokes is lengthened.
The concept is simple and elegant: balance the weight of the gasket, with an item of similar weight placed on the exact opposite side. For top models, this is obtained by a special operation on the section of the rim opposite the rim joint.
For entry-level models, Dynamic Balance™ is obtained by using two oversized spokes in the section opposite the joint. The result is a wheel with perfectly balanced rotational dynamics.
Buy Fulcrum Racing 5 CX Cyclocross Wheelset from Chain Reaction Cycles, the world's largest online bicycle store.
If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or fitted.More information on returns