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Ridley Dean Fast CC Road Frameset - 2015

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Sale $2,379.65 $6,799.00 65% off

Item # RID002R

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  • Carbon/White, XS ($2,379.65)
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Item # RID002R

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How to spell speed.

If there's anything that the engineers at Ridley have taught us through successive generations of FAST technology, it's that aerodynamics aren't simple. Fortunately, they've dumbed the science down to four simple letters: F, A, S, and T. And that spells PR, podium spots, speed, and—of course—fast. The Dean Fast CC Road Frameset embodies all of the Ridley's aerodynamic science to date, providing the most clear example of pure speed that the Belgian brand has produced to date. Though the Dean Fast is built with an uncompromising blend of high-modulus carbon fiber, the real star of the show remains aerodynamics.

Compared to previous Deans, the Dean Fast maxes out on speed with cleanly integrated aerobars and an F-Splitfork. Since it also incorporates the F-Surface air trip and discreetly shielded brakes, the alterations to the front end make the FAST concept a truly bike-wide application. The net effect is impressive, to say the least; Ridley credits the Dean Fast with a time savings of two minutes across a 112-mile bike leg.

The savings start with the F-Splitfork, which is counter-intuitive in that it actually creates more drag in the wind tunnel—but only while the wheels are standing still. When the wheels are spinning, the F-Splitfork nets a claimed 7.44% less drag than competing fork designs. It achieves this reduction in drag by redirecting the air resistance that spokes encounter at the top of the rotation, when they're moving forward into the wind. Think of the split in the fork as a kind of emergency release valve for the extra wind resistance that a wheel's rotation can create. Those drag savings are complemented with an integrated cockpit that feeds into the top tube with no wind-catching impediments.

The frame's tube shapes are obviously aerodynamic, but the inclusion of F-Surface sets the Dean apart from the sea of TT bikes from other brands. F-Surface involves trips or small ridges molded on the frame at strategic locations. These slight surface variations reduce the tendency of airflow to release prematurely, which in turn reduces additional drag in the form of low-pressure areas or stalled air in the frame's wake. This results in a claimed drag differential of -4.03% at 50 kilometers/hour (read: a faster time between T1 and T2).

Though its geometry is more aggressive than the Dean RS, the Dean Fast is a fully customizable machine. Stack, reach, whatever—the Dean ensures that discomfort or a poor bike fit won't be the reason you can't ride at your best. The Fast uses a more acute seat tube angle and a lower bottom bracket for a longer effective top tube and a much longer seat tube. This stretches the rider out lower and longer while tucked on the aero bars.

  • A TT or tri frameset for serious competition
  • Enjoys the full suite of Ridley's aerodynamic technology
  • Integrated handlebars eliminate wind-catching transitions
  • Hidden rear brake removes one more drag touchpoint
  • High-modulus carbon minimizes weight without losing stiffness
  • Adjustable reach and stack afford efficient comfort

Tech Specs

Frame Material:
30T-24T HM unidirectional carbon fiber
Wheel Size:
700 c
Dean Fast
Fork Material:
carbon fiber
Headset Included:
Bottom Bracket Type:
Cable Routing:
Front Derailleur Mount:
Brake Type:
Dean Fast
Seat Collar:
Recommended Use:
triathlon, time trial
Manufacturer Warranty:
5 years
Actual Weight:
Carbon/White, XS: 3600g

sizing chart

Dean size by rider height


Geometry chart


Geometry Chart



Seat Tube


Effective Top Tube






Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop




XS 51cm 51.2cm 50.6cm 39.5cm 10.1cm 72o 77o 7.5cm 39.5cm 96.6cm
S 52.7cm 52.7cm 52.2cm 40.8cm 11.6cm 73o 77o 7.5cm 39.5cm 97.7cm
M 55.4cm 54.8cm 54cm 42.5cm 13.5cm 73o 77o 7.5cm 39.5cm 100.2cm
L 57.5cm 56.8cm 56cm 43.9cm 15.6cm 73o 76o 7.5cm 39.5cm 102.2cm

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