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Ridley RS2 prototype gravel race bike leans heavily into aero optimisation with massive head tube
The 2026 Traka is proving to be a hotbed for fresh gravel bike tech, with Ridley debuting a new aero-optimised gravel race bike at the event in Girona. The new bikes key distinctive feature is the deep, slab-sided head tube, which is reminiscent of that seen on the Noah Fast 3.0 aero road race bike. Read more: Rob Britton debuts Factor's new aero suspension gravel bike at the Traka 560 The 'RS2' features a deep head tube, similar to that on the Noah Fast 3.0 aero road bike. Simon von Bromley / Our Media Generally, the front of a bike is considered the most important element to optimise for aerodynamics, given it plays a key role in how the air behaves over the rest of the bike (and the rider). Dropped seatstays give way to a sculpted down tube. Simon von Bromley / Our Media Doubling down on neat airflow, the seat tube of the new bike hugs the rear tyre, unlike the unreleased Canyon Grail CFR, which sports a cut-out lower section. Like the Canyon, though, the seatpost features a deep-D design. The leftover clearance is laid bare here. Simon von Bromley / Our Media That said, tyre clearance is clearly high and in keeping with the general trend for running wider tyres in gravel. The fork crown or shoulders aren't as broad or angular as some. Simon von Bromley / Our Media Belgian Bert Kenens RS2 we pictured was sporting 2.25in (57mm) Vittoria Peyote XC tyres on the also-wide Zipp 303 XPLR SW wheels, with a small amount of clearance to spare. Its a stretch to imagine the new bike could sport around 60mm tyres given the space left over, although it remains to be seen what Ridley says the official limit is. The underside of the seatstays appears optimised to fit the shape of fast XC tyres. Simon von Bromley / Our Media The chainstays are shaped to fit around wider XC tyres as they meet the bottom-bracket area. Tread height clearance looks to be fine, but the width clearance could be more limiting. Simon von Bromley / Our Media Interestingly, the fork crown and leg width appear less prominent than the forks weve spotted on the unreleased Grail CFR clearly, Ridley feels this isnt an avenue to exploit for aero gain. Again, width is the limiting factor here, rather than height. Simon von Bromley / Our Media The underside of the fork crown is flattened (as is the underside of the dropped seatstay bridge), which could be an attempt to optimise for the knobbled profile of gravel and MTB tyres. The down-tube storage port is easily accessible. Simon von Bromley / Our Media Were not seeing any mounting points for mudguards or racks here, but the frame sports a down-tube storage port accessible without removing the bottle cage. Strapped-on storage bags hint that Ridley hasn't included mounting bolts to save weight. Simon von Bromley / Our Media The bike is also 'missing' luggage mount points on the top tube or on the interior of the tubes. Kenens had strap-on storage bags fitted it's feasible Ridley has sought to keep the frame weight down by not including mounting points. The heavily cantered-in levers Kenens was running on his Forza aero handlebar. Simon von Bromley / Our Media Up top, this bike is running an in-house Forza one-piece aero cockpit, with a significant in-toe to the levers. Speaking to our tech editor Simon von Bromley in Girona, Ridley said the new bike had no prescribed launch date confirmed, but would become available eventually. Stay tuned for that news when it lands.
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