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Ridley
Noah SL Disc Ultegra Complete Road Bike - 2017

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Confidently fast.

Disc brakes have been creeping into the mainstream road scene for a while now, seen first among the more endurance- and gravel-oriented machines and now finally transitioning to race-ready, aerodynamic speed demons. Ridley's 2017 Noah SL Disc Ultegra Complete Road Bike pairs the speed-focused design qualities that earned its rim-brake counterpart accolades across the industry with Shimano's powerful hydraulic disc brake capabilities. Capped off with Shimano's legendary Ultegra mechanical drivetrain, this bike says goodbye to sacrificing overheated rims and sub-par braking in a trade for wind-cheating speed, effectively saying hello to the best of both worlds.


Although this Noah has been slightly tweaked and reinforced to handle the force dynamics of disc brakes, its oversized tubes still earn the SL suffix—which we assume denotes the industry superlative Super Light—through Ridley's inclusion of a mix of 60, 40, and 30-ton high-modulus carbon fiber. Both the Noah Fast and Noah top out at 50-ton, and the SL's inclusion of 60-ton means it can use less material at key points while maintaining the same efficiency, which in turn lowers weight. As with the rim brake model, the SL's different carbon moduli are placed in different areas of the frame based on desired properties of stiffness, weight, durability, and road-noise damping.


This targeted blend of materials is a common practice across the industry, though few manufacturers go to the extreme of using 60t carbon. The SL also features a tapered head tube for sharp tracking and efficient power transfer, and the PF30 bottom bracket, internal cable routing, and future-proof electronic group compatibility that are all but expected in frames of this level. Unlike other frames, though, Ridley incorporates its Future Aero Speed Technology (FAST) F-Surface design, which involves fluted channels running the lengths of forward-facing tubes to trip air into a manageable layer of turbulence. That tripped layer detaches later and more cleanly, reducing the frame's wake and overall wind drag.


The Noah SL's high-modulus carbon fiber fork looks distinctly different than other forks on the market, with an open channel running down the middle of each leg. This FAST F-Split Fork channel design is revolutionary in its ability to guide incoming air away from the spokes to reduce turbulence and drag, which keeps the airstream around the wheel smooth and fast. By pairing this fork with the FAST F-Surface design, Ridley claims that the Noah SL enjoys a 3-5% reduction in drag over frames without FAST design. This means more speed with less effort, all thanks to a little bit of surface air routing.


Details

  • A light, aerodynamic road machine with disc brake capability
  • High-end carbon fiber construction reduces weight
  • FAST F-Surface and F-Split Fork improve aerodynamics
  • Hydraulic disc brakes offer responsive modulation
  • Oversized bottom bracket shell efficiently transfers power
  • Internal cable routing provides clean lines
  • Shimano's Ultegra drivetrain delivers crisp, consistent shifts
  • Recommended maximum rider weight of 209.5lb (95kg)
  • Item #RID005L
Frame Material
60, 40, 30T high-modulus, unidirectional carbon fiber
Fork
Noah SL Disc
Fork Material
40, 30, 24T high-modulus, unidirectional carbon fiber
Headset
FSA 1-1/8 - 1-1/2in tapered
Shifters
Shimano ST-RS805
Front Derailleur
Shimano Ultegra
Rear Derailleur
Shimano Ultegra
Crankset
52/36t Shimano Ultegra
Bottom Bracket
PF30
Cassette
11-28t Shimano 105
Chain
KMC X11
Brakeset
Shimano BR-RS805 flat-mount
Brake Type
hydraulic disc
Handlebar
4ZA Cirrus Aerobar
Stem
4ZA Cirrus
Saddle
4ZA Cirrus Pro, Cr/Ti rails
Seatpost
Noah SL Aero Carbon
Wheelset
DT Swiss R32 Disc
Front Axle
12 x 100mm thru-axle
Rear Axle
12 x 142mm thru-axle
Tires
Continental Ultrasport Folding
Tire Size
700c x 25mm
Pedals
not included
Recommended Use
cycling
Manufacturer Warranty
5 years

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