The Specialized Crux 5 Frameset is a gravel race frameset for riders building a custom rig on a carbon race platform at a more attainable starting point. The FACT 10r carbon frame weighs 897 grams, and the full frameset comes in at 1.75 kg (3 lb, 13.7 oz) in a size 56. Rider First Engineered construction tunes the layup to each frame size for stiffness under power and compliance over rough ground. The package includes a matched S-Works FACT carbon fork with a 12x100mm thru-axle and an S-Works Tarmac SL8 carbon seatpost with a 15mm offset and an integrated wedge binder. A 68mm BSA threaded bottom bracket, 12x142mm rear thru-axle, flat-mount disc interface, and UDH dropout open the build to SRAM, Shimano, or Campagnolo gravel groups. For the rider speccing a personal race build without the flagship frame cost, the Crux 5 frameset is the base for a bike dialed to your fit and component choices.