The handlebar stem is in ergal billet from the Anodized full load and in black. Sold in couple, has diameter 28 specific milimeter and is for handle-bars to variable section. Is available in the versions UNIVERSAL for the motorcycles predisposed with the handlebar stem originates them removable, and in versione SPECIAL for the motorcycles that have the handlebar stem in the fusion of slabs originates them. ATTENTION !!!! The YAMAHA FZ1 need the riser N1017/U + the code YF1117