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 aluminium 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 ride ability.
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.
Rim with oriented drilling of spoke seat: For increased stability.
Stainless Steel spokes: Provide high levels of tension and stiffness.
High grade, top quality steel bearings with cup and cone construction: Reduce friction and ensure consistent performance over time.
2Way - Fit™ Ready (Road)
This procedure transforms Racing 4/5/6/7 DB and Racing 400/500/600/700 DB wheels (designed to be used with a clincher tyre and inner tube) into Tubeless Ready wheels (no inner tube and compulsory use of a sealant liquid).
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 Rim
Fulcrum® is one of 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 Disc Hub
The 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.
The Anti-Rotation System™ is designed to make sure that spokes will never lose their initial tension and remain in the position that have been studied in the wind tunnel tests to ensure the best aerodynamic penetration possible.
Note: Shimano 9/10-speed only with 1 mm spacer which is included with the cassette.
Application: Road, Cyclocross
Wheel Size: 28"
Tyre Type: clincher
Number of Spokes: 24
Brake Type: disc Center Lock (AFS Axle System™)
Tubeless System: 2-Way Fit™ Ready
Shimano Freehub Body: 8-/9-/10-/11-speed Shimano/SRAM (Road)
Note: Assembly of 8-/9-/10-speed cassettes on Shimano freehub bodies requires a 1.85 mm spacer.
Technical Information - Rim:
Dimensions (ETRTO): 17-622
Inner Rim Width: 17 mm
Depth: 34 mm
Valve Hole Diameter: Presta (6.5 mm)
Rim Material: aluminium
Technical Information - Front Hub:
Over Locknut Dimension: 12 x 100 mm thru-axle, can convert to 15 x 100 mm thru-axle and 9 x 100 mm quick release
Body Material: aluminium
Technical Information - Rear Hub:
Over Locknut Dimension: 12 x 142 mm thru-axle, can convert to 12 x 135 mm thru-axle and 10 x 135 mm quick release
Body Material: aluminium
Technical Information - Lacing:
Spoke Type: straight pull / round
Spoke Material: steel
Nipple Material: aluminium
Weight Limit: 109 kg total weight*
Recommended Tyre Width: 25-50 mm
2-Way Fit Ready:
Converting two tubeless requires the following products:
- Schwalbe Pro One Evolution Tubeless Easy (TL-Easy) tyres
- 23 mm Schwalbe Tubeless Rim Tape , Factory Number: 887023
- Tubeless Valves, Factory Number: KIT-2WFR
- Schwalbe Doc Blue Tyre Sealant
* When weighing more than 82 kg (180 lb) shorter inspection intervals are recommended.
- 1 x Fulcrum Racing 4 DB 2-Way Fit™ wheelset
- 1 x Fulcrum 10x135 mm conversion kit
- 1 x Fulcrum 12x135 mm conversion kit
- 1 x Fulcrum 9x100 mm conversion kit
- 1 x Fulcrum 15x100 mm conversion kit
-black / 28" set (front 12x100 + rear 12x142) Shimano : 1690 g