The GIGA stem is made out of one piece of 6066 lightweight aluminium. The 6066 aluminium makes it light and stiff at the same time.
80/90mm: gives you a more aggressive agil riding performance. A 80mm stem length is recommended for Small and Medium frames and riser or bullhorn bars.
100/110mm: is the perfect allround stem length and recommended for all frame sizes and handlebars. If you are not sure what stem length to use you should go for this stem length.
120mm: for traingin and racing only. It makes your front wheel less nervous and gives you an aerodynamic and sportive riding position.