- The new Superzero stem is the perfect combination of stiffness, lightness and aerodynamic shape. The stem has a trapezoid shape with a flattened top section for torsional stiffness and excellent aerodynamic performance. Designed for the most demanding riders, the stem is manufactured using an innovative 3D forging process with AL 2014 alloy. * Fork Clamp Diameter: 28.6mm (1 1/8") * Clamp Diameter: 31.7mm * Material: AL2014 alloy * Bolts: CrMo Steel * Angle: 82 * Weight: 140g (110mm)
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