Race face atlas stemcomes with a race face 5 year warrantyatlas is designed to bridge the needs of am and frdh riders light enough for am tough enough for fr and dh providing the ultimate in versatility features6061 t6 aluminum four bolt bar clamp holds bar securely in position interlocking u shaped handlebar clamp geometry faceplate eliminates stress risers which cause your bar to bend or break opposing bolts on steer tube clamp provides extreme clamping power while reducing stress on