Arx is 3ts new design for the perfect connection between fork and handlebar in particular they have optimized the design of the clamps steerers and handlebars are now usually made of composite materials and can easily be compromised by poor clamp design to assure the integrity of the arx clamp interface 3t perform their own tests that go way beyond the demands of cen standards they even tested this new stems compatibility with other brands of handlebars and it passed with flying colours