The stem S1 is very light and also torsion stiff thanks to its design. The 90 mm length version weights 100 g. It is angled 6 degrees and can be mounted both or down. Available lengths is 80-, 90-, 100- and 110 mm. The material is aluminum in the main structure with titanium bolts. Finish is black anodized main structure with nature anodized nuts. Logo, length and bolt torque silver laser etched.