S-Works Crux 5 Frameset - FACT 12r CarbonS Works Crux 5 Frameset FACT 12r Carbon The S Works Crux 5 Frameset is the foundation for an elite level gravel race bike. Built from FACT 12r carbon, it is designed to be incredibly light, fast, responsive and efficient across demanding gravel race courses and mixed surface riding. This frameset gives riders the opportunity to build a top tier Crux exactly how they want it. With a claimed frame weight of just 789 grams, a threaded BSA bottom bracket,