Subrosa high life bmx stem6061 t6 aluminium top load stem from subrosa the high life is cncd from 6061 t6 alloy and has been machined to save weight whilst being wide for increased clamping power the stem also features an increased handlebar rise over traditional topload stems and comes with oversized 6mm bolts features construction 100 cnc 6061 t6 alloy bolts oversized solid bolts reach50mm rise36mm weight311gbuysubrosa componentsfrom chain reaction cycles the worlds largest o