Specialized Crux 5 Sport Shimano GRX 800The Crux 5 Sport brings the race validated Crux 5 platform to riders who want a proven, reliable mechanical drivetrain they can maintain anywhere and trust completely on race day. The FACT 10r carbon frame and S Works FACT carbon fork deliver the same stiff, responsive ride found across the Crux 5 lineup, while Shimano GRX 800 provides confident, precise shifting across a 12 speed 10 45T cassette with the tactile feedback and bulletproof reliability