In particular we 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 we perform our own tests that go way beyond the demands of cen standards we even tested this new stems compatibility with other brands of handlebars and it passed with flying colors the arx team is made of al 7075 t6 with the grain structure aligned for optimal st