Changing your stem can help you get the right position on the bike. Here at Bikester we sell stems of different lengths, angles and from different materials: aluminium and carbon for when you need your bike to be extra light. Stems for wide mountain bike handlebars tend to be shorter, while racing bike riders often go up to 130 mm long for a really stretched out position. If you don't feel comfortable on your bike, a more suitable stem might be just what you're looking for.