The innovation of materials in a powerful design. The most adavanced technology of light alloy tempered by tough experience with the great cycling champions. 3D forged road stem, stress directional fiber orientation. - Titanium 6/4 hardware. - Handlebar O.D.: 31.7mm - Fork steerer O.D.: 28.6mm (1"1/8) - Extension angle: 82° - Collar stack height: 40mm - Tightening torque: for all bolts, 8 Nm (5,9 ft.-lbs)(71in-lb) - Weight: 107g (120mm)