Aluminum bike stem forged by a unique 3D Net Shape Forging method, guaranteeing maximum strength and lowest possible weight. The new 220 four-bolt clamp (4 x M4) reduces weight, increases torsional stiffness of the front of the stem and reduces pressure on the handlebars. Allows standard handlebar replacement. Length:70-130mm For post diameter: 1-1/8mm Handlebar diameter: 31.8mm Angle: 73/17° Material: 2014 Alloy Weight: 134g (100mm)