The best choice for those looking for maximum speed. The 75 DB model completes the WIND range. This high profile wheel is the best expression of all the aerodynamic research and development carried out by Fulcrum's engineers. The ultra-aero profile makes it the ideal wheel for time trials, triathlons and all situations where aerodynamics make the difference and you’re pedalling at high speeds. The challenge of the project was focused on achieving high air penetration and speed numbers, without compromising the wheel’s stability and handling, despite the height of the profile. This was achieved with thorough wind tunnel testing, that resulted in a new profile of the unidirectional carbon rim, whose internal and external dimensions are in line with current trends: rim width 27mm and channel width 19mm. Features of Fulcrum Wind 75 DB: RDB™ Rim Dynamic Balance DRSC™ - Directionated Rim-Spoke Coupling Anti-Rotation System™ Axial Fixing System™ 2-Way Fit™Specificatii:Type of tire: 2-Way Fit (for clincher and tubeless). Rim diameter: 28 ". Discipline: Road / Triathlon. Category: ASTM 2.Wheel material: Carbon. Rim material: Full carbon, "Unidirectional" carbon fiber finish. Profile height: High. Rim height: Front and rear: 75 mm. Rim width: 27 mm. Internal channel width: 19 mm. Tire width: from 23 mm to 50 mm. Brake system: Disc brake. Braking surface / brake option: AFS. Front axle compatibility: HH12-100. Rear axle compatibility: HH12-142.Spokes: rear 24 (8 left - 16 right). Spokes: material Stainless steel, double thickness. Spokes: rounded profile, straight head. Nipples: Aluminum.Rear hub: Aluminum, aluminum flanges. Bearings: Sealed cartridge bearings. Other: Aluminum axle. Weight limit: 120 kg (Cyclist). Freewheel version: Shimano HG11 / Sram XDR