Argon 18 created the Krypton platform to handle a wide array of conditions in comfort. A fondo bike, a cyclosportif bike, that sort of thing. This is the Krypton CS, short for CycloSportif. It’s an evolution of their endurance platform to make it more comfortable, more capable, and ready for bigger tires. It also boasts disc brakes. The CS and GF share a geometry, and molds, the difference being in the composition of the carbon-fiber used. The CS uses lower modulus plies, and thus needs more to yield the same ride qualities.