Ritchey pro logic threaded headset ritchey strive for at least 2 x the standard laid out by cen the european committee which determines minimum safety standards for bicycles and components sold in europe by the time you put a ritchey product on your bike it has passed a global testing and approval process second to none features colour blackweight 140g 1 160g 1 18material steelsteerer tube 1 or 1 18 threadedcrown race 26 4mmstack height 33mmbearing type 18 316 loose ba