Racing 1 wheels have competition in their DNA. If you’re looking for a lightweight clincher wheel that gives the best performance under any condition and has a marvellously aggressive look, you’ve found it.

Features and Specifications:

Rim:
The aluminium rims have a differentiated profile front and rear. The front wheel height is 26 mm to achieve perfect aerodynamic penetration, while the rear increases to 30 mm to provide all the stiffness necessary to transmit every watt of your power. Both rims feature the characteristic Fulcrum toroidal milling between the anchoring points of the spokes.
The fact that the rim grooves do not have holes translates into greater torsional stiffness and greater vertical elasticity.

Hub:
The oversize hubs are in aluminium. Smoothness is guaranteed by special bearings designed and produced by Fulcrum that have many more balls than normal industrial bearings and hence produce unparalleled smoothness. Racing 1 wheels were born to be fast, so Fulcrum has equipped them with the patented Dynamic Balance system that makes them stable and precise even at high speed.

Spokes:
The spokes are in aluminium with aero profile and a central section of 2.6 mm, 16 radial for the front wheel and 21 for the rear wheel distributed according to the famous Fulcrum 2:1 spoking, with double the number of spokes on the cassette side. The nipples are in aluminium, too, which reduces the important peripheral mass of the wheel, thereby increasing its performance in acceleration.

Weight: 

• Front - 629g
• Rear - 856g
• Skewers: 121 grams per pair 

Technologies:

Two-to-One
When you push on the pedals, the rotational force on the sprocket induces a slackeningof 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.

Dynamic Balance
Unlike carbon rims, all the aluminium rims are joined. The joint, though indispensable, entails a concentration of material in a single point and creates an annoying “jump” effect at speed. Fulcrum has eliminated this annoying problem with the Dynamic Balance patent.

The concept is simple and elegant: balance the mass of the joint with a mass of the same weight. 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.

Maximum Compatibility
Fulcrum have developed a freehub body that is perfectly compatible with Shimano Including 8, 9 and 10 speed systems and SRAM 10 speed ones.

Note:

• Wheels are supplied with wheel bags and skewers
• Rim tape is not required
• Weights for the wheels are actual weights of our sample pair and exclude skewers - which were weighed separately (121 grams)