Fulcrum

Fulcrum Racing 4 Disc Brake Clincher Wheelset


About Fulcrum Racing 4 Disc Brake Clincher Wheelset

35mm is the entry point for the mid-profile rim segment, when we start to talk about aerodynamics, stability at high speeds and maximum steering precision.

Racing 4 DB is a sturdy, precise aluminum wheel with sophisticated features such as straight head spokes and the 2-Way Fit Ready profile, all in one super competitive package that's ready to race. 

This wheel has character and cyclists can choose to use it either as their only wheel or as an ideal training partner, offering an aerodynamic advantage and good rideability.

It is the perfect range for those looking for an aerodynamic racing bicycle and ideal for triathletes as well as rouleurs who are eager to perform well on the climbs. Every watt will enhance performance, every turn will be executed with precision.
Technologies

Anit-Rotation System - This new system raises the concept of spoking to a new level of performance for road bike and triathlon wheels.

The Fulcrum engineers have redesigned the spokes and the hub housings to create a solid and unmoveable whole. The result is that the spokes 

a) will never lose their initial tension, thus keeping the wheel perfectly reactive and centred

b) will remain in the position that have been studied in the wind tunnel tests to ensure the best aerodynamic penetration possible.

F.I.C. Fulcrum Identification Card - 100% Handmade Quality -  Right from its inception Fulcrum has been marked by feature that continues to this day: that is to design, prototype and industrialise all the wheels characterised by the red “F”.

Indeed these take shape inside of the R&D, the leading-edge department that represents the beating heart of the Italian company.

Every single component of the wheel, the materials chosen and the technologies applied are the tangible result of the effort that Fulcrum makes every day to give you maximum performance and reliability.

AFS Axle System - The Axial Fixing System is the solution developed by Fulcrum to fix the disc brake to the hub. The constraint granted by the butt area of the release mechanism, greater than in familiar standard ones, makes it possible to obtain greater structural rigidity and therefore more precise and powerful braking.

Disc Specific RimFulcrum is one of the first wheel manufacturers on the market to offer two completely different rim profiles from disc to conventional brake. So, no adaptation, but a rim conceived based on years of design experience.

Not requiring a braking track, Fulcrum’s R&D department designed a completely new profile, aimed at saving every single gram of weight and at improving aerodynamic efficiency.

Its greater width makes it a perfect fit for tyres of 25/28mm upwards.

Monoblock Hub for DiscThe rear hub of a top-quality disc brake wheel is a technical problem to be solved. Fulcrum’s R&D department found itself facing a fundamental choice: on which side to put the oversize flange of the Two-to-one system? Disc or sprocket side? Without question - must stay on the sprocket side.

To combat the loss of braking power from flex and torque of the connector between the two sides of the hub, a special one-piece system has been devised with internal stiffening ribs.

2Way-Fit (Road)

Specifications

  • Tyre Type: 2-Way Fit Ready
  • Tyre Size: 28"
  • Weight: 1690 g
  • Rim Material: Aluminum
  • Rim Material Details: Aluminum
  • Rim Height Category: Medium
  • Rim Height: Front and rear: 35 mm
  • Rim Width: 23,5 mm, ETRTO 17C
  • Tyre Width: From 25 mm to 50 mm
  • Braking System: Disc Brake
  • Braking Surface/Braking Options AFS
  • Front Axle Compatibility: QR/HH15-100/HH12-100 (no skewers incl.)
  • Rear Axle Compatibility: QR/HH12-142 (no skewers incl.)
  • Front Wheel Spokes: 24 (16 left + 8 right)
  • Rear Wheel Spokes: 24 (8 left + 16 right)
  • Spokes Material: Stainless steel
  • Spokes Profile Technology: Rounded, Straight pull
  • Nipples: Aluminum
  • Front Hub: Aluminum, Aluminum flanges
  • Rear Hub: Aluminum, Aluminum flanges
  • Bearings: Sealed cartridge bearings
  • Weight Limit: 109 kg (Cyclist)
  • FWB Version: HG11 optional: Campy, XD

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