At the heart of it is our DSW Sprint Technology, which strategically places more welding material where it's needed, resulting in an aluminium bike that's more compliant and considerably stiffer. How stiff, exactly? It's the stiffest alloy bike we've ever tested. Drawing inspiration from the Rider-First Engineered Tarmac, this frame has a unique down tube, bottom bracket shell, and head tube, plus fork sizes that correspond to frame size. This ensures uniform performance across the entyre size run. Making sure every single watt you produce gets transferred to the road, it has short chainstays that create an extremely stiff and rigid rear triangle. But it goes beyond just pure rigidity, as the hydroformed tube shapes have also been aerodynamically optimized to slice through the wind. For the build, we spec'd it with an awesome mix of Shimano Ultegra and 105 for the shifting. As for the rest, you can expect a stiff Praxis crankset and fast-rolling Axis Elite alloy wheels.