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Get ready for another round of “fastest bike ever,” but this time, it’s Ridley’s turn, and they have a pretty convincing argument. The all-new Ridley Noah Fast uses the UCI’s updated 8:1 Rule for maximum aero tube shapes. They updated the geometry and gave it a 36cm wide integrated cockpit, and it can fit up to 34mm tires. Is this the new norm for Aero bikes? All Photos: Ridley What’s New? Ridley Noah Fast
Ridley claims its new Noah Fast is the fastest bike it has ever produced, boasting 8.5-watt savings over its predecessor at a blistering 50kph World Tour pace. Unveiled after months of speculation, the redesigned aero bike brings cutting-edge features and a fresh design inspired by recent UCI rule changes.
Ridley’s 2025 design philosophy is simple: “Aerodynamics is everything.” ( where have I heard that before? ). Leveraging its in-house wind tunnel and the latest UCI regulations, Ridley has created a bike that’s faster, stiffer, and more integrated than ever before. Redefining Aero with UCI’s 8:1 Rule
The most notable change shaping the Noah Fast is Ridley’s embrace of UCI’s updated 8:1 tube ratio rule. Previously, the UCI restricted tube dimensions to a 3:1 ratio, limiting aero optimization. However, with the rule change in 2023, Ridley has drawn inspiration from its Dean Fast time trial bike, implementing longer, narrower tube profiles in the fork, seat stays, and down tube. […]
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