The new R5 frame is 130g lighter than the previous model—a 16% reduction from an already-light frame. The new frame is 703g, and the new fork is 329g, bringing the frames to just a hair over the kilogram mark. They also pulled some weight out of the parts that are included with the bike—the handlebar and stem are each 12g lighter, and the seat post’s 20g lighter. You won’t have any trouble building a bike that meets the 6.8kg UCI minimum. And while aerodynamics weren’t a focus with this frame the way they would be on an S5 or P5, bringing the cables inside reduced drag by 25g, too. It’s faster in every direction.