Octane one chemical pro stem front load stem made of custom forged and machined aluminium 6061 available incredible strong stiff lightweight good aesthetics and affordable can be used while riding upside down features material cold forged 6061 t6 alloy cnc machining extension reach 40mm1 6 rise 3mm low stack 25 4 295mm1 2 31 8 36mm1 4 opposite steertube clamping bolts 6mm bolts with 5mm allen key sockets weight 25 4 174g 31 8 196g buyoctane one components from cha