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Item # RID0001

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'Fast' just got a lot faster.

Mathematically, your odds in a solo breakaway aren't particularly favorable. The Ridley Noah is a carefully calculated equation designed to improve those odds. Incorporating a number of Ridley's FAST Concept technologies, the Noah has been tested to reduce power input needed by up to 15 watts in a 50km/h (just over 30 mp/h) breakaway. The less power you need to maintain your breakaway speeds, the greater your ability to conserve more energy to stay away from the field longer. That makes your odds for the top spot on the podium a little better.

While most bicycle companies would be content to rely on their tubesets for an aerodynamic advantage, Ridley's research and development on their flagship Noah go far beyond tube shapes and bike geometries. The latest generation of Ridley's groundbreaking Noah shares the same proven aero features as its earlier iterations — including an aero downtube, internal cable routing, an aero seat tube that extends into an integrated seatmast, and a deep rear wheel cut-out. What sets the Ridley Noah DetailNoah apart from other aero bikes is its use of Ridley's R-Flow technology. As we all know by now, drag increases exponentially with airspeed, which means small changes to reduce your drag will have a disproportionately positive impact as your speed increases. R-Flow technology focuses on one specific issue of bicycle aerodynamics. According to Ridley, your wheels produce eight times more drag where they pass through your fork and seat stays due to the turbulence of the colliding air masses there. The Noah is built to minimize this drag thanks to its use of long, slotted airfoils built into both the fork legs and the seat stays. These airfoils redirect oncoming air away from the turbulent areas near the wheels.

The story of the Noah doesn't stop at R-Flow. Ridley used oil mapping in the wind tunnel to isolate spots of turbulent airflow. And where structural limitations kept them from re-sculpting the frame, they applied a textured surface treatment for boundary layer control. Ridley calls it 'R-Surface,' also affectionately referred to as 'aero paint.' These thin strips of texture are amazing; they purposely trigger a known amount of turbulence that re-energizes lost boundary layers, ultimately re-establishing laminar flow and minimizing drag. In other words, they carefully create an airflow mess in order to make an unprecedented cleanliness. Airflow control is why you see vortex generators on aircraft wings, and why you see dimples on golf balls. And it's exactly what Ridley does with their R-Surface paint.

The Ridley Noah comes in five sizes from X-Small to X-Large and is available Black/White/Red. Given its semi-compact geometry, we strongly suggest that you focus on the effective top tube length as you make a determination of the proper size. The Noah FB requires a press-fit BB30-compatible bottom bracket and a braze-on front derailleur. It includes a 120 gram seat clamp assembly that allows an 18mm range in saddle height and comes with 1mm micro-spacers for small adjustments. Ridley also offers an aftermarket clamp that provides 40mm of height adjustment. With the frame weight at less than 1200 grams, comparisons with other bikes are favorable for the Noah, as you save some weight for the seatmast/clamp assembly. In the end, there's virtually no weight penalty. Given the aerodynamic upsides of the Noah, the fact that weight is a non-issue makes it that much more appealing. Please provide us with your BB-Saddle Rail height in the "Comments" section of our order form so we can properly cut down the seatmast for delivery.

  • Oversized tube shapes add stiffness along with aerodynamic efficiency, so all of your output translates into speed
  • Internal cable routing maximizes the frame's aero properties
  • R-Surface paint treatment reduces drag by 4%
  • SRAM Red gruppo provides pro-level shifting and power transfer
  • Deda aluminum handlebars and stem provide confident stiffness for the sprint
  • Fulcrum wheels get you riding fast right away
  • Full-carbon construction is light, stiff, and strong
  • Integrated seat mast offers perfect fit, without compromising on weight or stiffness

Tech Specs

Frame Material:
carbon fiber
Dropout Type:
1.125 x 1.125 in internal
Steer Tube Type:
carbon fiber
Ridley R-Flow
Fork Material:
carbon fiber
Fork Blade Shape:
Fulcrum Racing 5
Front Derailleur:
Front Derailleur Mount:
Rear Derailleur:
Chain Rings:
53 x 39 teeth PowerGlide SRAM
Crank Arm Length:
(medium) 172.5 mm
not included
Bottom Bracket:
Brake Levers:
Brake Calipers:
4ZA July
Deda RHM01
Handlebar Width:
(medium, center-to-center) 42 cm
Bar Tape:
SRAM Supercork
Deda Zero1
Stem Length:
(medium) 110 mm
Stem Angle:
6 deg
SRAM PC-1031
12 - 25 teeth PG-1070 SRAM
Tire Size:
700 C x 23 mm
integrated mast
Seatpost Length:
(extension above top tube) 225 mm
Seat Collar:
Ridley post-mount assembly
4ZA Stratos
1190 g
Measured Effective Top-Tube Length:
(medium) 56.5 cm
Recommended Use:
Cycling, racing
Manufacturer Warranty:
(frame and fork) 10 years, (paint) 2 years

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Here's what others have to say...

5 5


stiff, light, and ready to race. this bike will eat people trying to pass it, best to be on top of it i say. this bike is for the racer elite, as well as those who want to feel like their mcewen every saturday morning. my favorite bike.

my height is 5.5" is small the right size...

Posted on

my height is 5.5" is small the right size for me?

Responded on

I'm the same height and purchased a x-small helium. go by effective top tube length.

I'm the same height and purchased a x-small helium. go by effective top tube length.

Ridley Noah Breakdown

Posted on

Todd from Ridley giving some info on the Noah

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