35 mm, the entry into the segment of medium profile rims when you start talking about aerodynamics, stability at high speeds and maximum steering accuracy.
The Racing 4 DB is a solid and precise aluminium wheel. It features ingenious solutions such as straight-headed spokes or the 2-Way Fit Ready profile in a super-powerful, race-ready package. Clearly a wheel with character that can slip into the role of both single wheel and excellent training companion, offering aerodynamic benefits without requiring steering effort. It fits perfectly to road bikes with aerodynamic profiles, corresponds in the best possible way to triathletes as well as long distance riders. Each watt is amplified, each curve is taken with precision.
This new system takes the concept of the storage system to a new level of performance. Fulcrum's engineers have redesigned the spokes and hub housings to create a strong and solid unit.
This way, the spokes:
a) Never lose their initial tension and the wheel remains perfectly responsive and centered, and
b) Remain in the position developed in the wind tunnel to ensure the best possible aerodynamics.
F.I.C. Fulcrum Identification Card - 100% HANDMADE QUALITY
Fulcrum has been characterized by a continuous approach since its inception: planning, prototype development and industrialization of all wheels with the red "F". Each individual wheel component, the materials selected and the technologies used are the tangible result of Fulcrum's daily efforts to offer you maximum performance and reliability.
AFS Axle System
The Axial Fixing System has been developed by Fulcrum to fix the disc brake to the hub. The limitation caused by the impact area of the release mechanism, which is greater than that of the known mechanism, makes it possible to achieve greater structural rigidity and thus more precise and powerful braking.
Disc Specific Rim
Fulcrum is one of the main wheel manufacturers on the market, offering two completely different rim profiles between disc brake and conventional brake. So no adaptation, but a newly designed rim, based on years of design experience. Since no brake surface was required, Fulcrum's R&D department designed a completely new profile to save every gram of weight and improve aerodynamic efficiency. The larger width makes a perfect combination with 25/28 mm or more tyres possible.
2Way - Fit Ready (Road)
The following Fulcrum Road My 2018 wheels
Racing 4 DB
Racing 5 DB
Racing 6 DB
Racing 7 DB
As well as the following original equipment bicycle wheels (with custom colours):
Racing 400 DB
Racing 500 DB
Racing 600 DB
Racing 700 DB
Can be converted to 2-Way Fit Ready. Only Schwalbe Pro One's Tubeless Easy (TL-Easy) tyres have been tested and approved for conversion of Fulcrum Road 2-Way Fit Ready rims. Any other Tubeless and Tubeless Ready tyre type is prohibited.