- Vai bar and Vai stem are made from 3D forged Aluminium 6061 T6 and submitted to a specific heat treatment at the end of the work cycle to guarantee great reliability and resistance to flex. The front faceplate has 4 screws with the Cinelli logo forged on the front. These products, designed to be used in conjunction with each other are the perfect product for the amateur cyclist who requires racing performance. * Clamp diameter: 31,8 mm * Clamp diameter: 28,6 mm (1 1/8") * Stem angle: 84deg/96deg * Material: Forged in Aluminium alloy 6061 T6 * Finishing: Matt black anodized * Bolts: Front M5 - Rear M6 * Sizes: 90-100-110-120mm * Weight: 175 g/110 mm