The renamed Criterium du Dauphine has been a feast of new bikes this year and amongst the throngs of aero bikes, Ridley appears to have given its lightweight Falcn RS some much needed updates.

Already in use at the women’s Giro d’Italia, the Falcn RS is a bike that we haven’t seen too much of in pro races. Riders tend to favour the more aero Noah Fast, though since the latter became such a focused aero bike, it hasn’t been best suited for the high mountain days.

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A sticker that every nerdy bike journalist loves to see (Image Credit: Liam Cahill)

At the start of the Tour Auvergne-Rhône-Alpes’ first stage, a bike clearly marked as a prototype was easily identifiable in front of the UNO-X team bus.

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(Image Credit: Liam Cahill)

The new bike looks to have some small revisions over the existing design with a slightly more profiled design around the head tube, presumably for aero savings.

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There is plenty of space in that fork for some seriously wide road tyres (Image Credit: Liam Cahill)

The most notable change, however, is the space inside the fork. Tyre clearance stands at 34mm currently and when speaking to the UNO-X mechanics (a lovely bunch) prior to stage one, they said they were unsure of the upper limit of tyre size.

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The rear end features far more aero tubing than the Aethos, so it is likely to be a faster machine (Image Credit: Liam Cahill)

I also asked about the weight of the bike, an important metric given the bike’s lightweight focus. The mechanics cryptically told me that it wasn’t too difficult for them to trouble the UCI’s 6.8kg minimum weight limit.

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Nothing beats a bit of raw carbon in the sun (Image Credit: Liam Cahill)

When we see the bike launch, presumably some time later this year, it’ll be interesting to compare it to the Specialized Aethos, another lightweight machine.

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(Image Credit: Liam Cahill)

The bike of Torstein Træen had an interesting setup choice at the cranks. 167.5mm is not a length that we commonly see, either on pro bikes or on consumer models. 

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(Image Credit: Liam Cahill)

He also had a set of Sram Blips on the inside of his drops for easier gear changes when tucked down.

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(Image Credit: Liam Cahill)

His Deda Nimbus Pro one piece bar features a gentle flare to the drops.

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(Image Credit: Liam Cahill)

On the front of this, the lightweight theme continues with a skinny 3D-printed computer mount.

Ridley Prototype Dauphien 2026-6(Image Credit: Liam Cahill)

This is, however, nothing compared to the lovely custom team design that you’ll find on the Noah Fast.