Cinelli pista stemthe pista stem is constructed from 6061 t6 aluminium alloy for a light weight and great performance to achieve the most aggressive position possible the pista features a steep 65 degree angle that is typical of track bikes the stem plate features an etched logo and cinelli branding along the side features material al 6061 t6 body and front cap clamp diameter bar 31 8mm clamp diameter steerer 118 28 6mm bolts steel 12 9mm chromium plated front m5 rear m6 stem an