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Combined expertise in aerodynamics and Computational Fluid Dynamics paved the way for Profile Design’s first-class 38/TwentyFour Clincher Wheelset. To achieve the best rim profile for crosswind handling and reduced drag, Profile Design’s aero experts collaborated with a team of CFD technicians in designing, testing, and refining scores of rim prototypes. Ultimately the 38mm rim profile of the 38/TwentyFour distinguished itself as the winner; its subtle curve and rounded spoke-facing edge mitigates crosswind force while an external width of 24.5mm flattens the sidewalls, delivering impressive stability and smooth rolling.
The forged and machined 6061-T6 aluminum hub and shot-peened hard anodized 7001-T6 aluminum freehub deliver stiffness and an 18% increase in material strength, according to Profile Design, which translates to nimble shifting and greater power transfer that’ll give you a leg up in reaching your racing and riding goals.
For greater durability and braking performance, Profile Design developed a proprietary high Tg point resin for their TwentyFour series wheelsets that’s, according to PF, 30% higher than other “high” Tg resins.
Rim Material: Carbon fiber.
Wheel Size: 700c.
Tire Type: Clincher.
Rim Depth: 38mm.
Rim depth (inside): .
Rim Width 17mm (internal), 24.5mm (external).
Hubs: 6061-T6 Alloy.
Bearing size: 699 (front); 6802 (rear).
Front Axle: Not specified.
Rear Axle: Not specified.
Spoke Material: Stainless Steel.
Spoke Shape: Straight Pull, Bladed.
Spoke Pattern: Radial (front); Radial/2 cross (rear).
Spoke Nipple: 7075 Alloy Polyax Double Square.
Spoke Count: 20 (front); 24 (rear).
Max. Rider Weight: 220lbs.
Claimed Weight: 657g (front); 808g (rear).
Compatibility: Shimano/SRAM 9/10/11spd; Campagnolo 10/11spd w/ separately sold Campagnolo-specific freehub.
Manufacturer Warranty: 2 year limited.