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Profile Design
38/Twentyfour Clincher Wheelset

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A-1 Aero.

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.
  • Skewers: QR.
  • 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.

Rim Diameter: 622 


Rim Depth: 38 mm


Rim Width: 17 Internal mm


Rim Width: 24.5 External mm


Hub Drilling: 20 Hole 


Weight: 1465 gr


Max PSI: 125 psi