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Professional caliber features at a real racing car price. This 3D mesh forged 6061 aluminum stem provides +/- 30 degree stem angle for riders who want a more comfortable fit. The angled steering tube clamp slot reduces strain on carbon steering tubes. Lengths: 60-120mm Angle: +/- 30° Clamp diameter: 31.8 mm. Clamp Width:40mm Handlebar diameter: 28.6 mm. Handlebar height: 45 mm. › See more product details; Product description Ritchey: Professional caliber features at a real racing car price. This 3D mesh forged 6061 aluminum stem provides +/- 30 degree stem angle for riders who want a more comfortable fit. The angled steering tube clamp slot reduces strain on carbon steering tubes. Material: 6061 Alloy Bolt: stainless steel. Lengths: 60-120mm Angle: +/-30°. Clamp diameter: 31.8 mm. Clamp Width:40mm Handlebar diameter: 28.6 mm. Handlebar height: 45 mm. Weight: 136g (90mm) Colour: BB black.; Product description Ritchey: Professional caliber features at a real racing car price. This 3D mesh forged 6061 aluminum stem provides +/- 30 degree stem angle for riders who want a more comfortable fit. The angled steering tube clamp slot reduces strain on carbon steering tubes. Material: 6061 Alloy Bolt: stainless steel. Lengths: 60-120mm Angle: +/-30°. Clamp diameter: 31.8 mm. Clamp Width:40mm Handlebar diameter: 28.6 mm. Handlebar height: 45 mm. Weight: 136g (90mm) Colour: BB black.; Ritchey: Professional caliber features at a real racing car price. This 3D mesh forged 6061 aluminum stem provides +/- 30 degree stem angle for riders who want a more comfortable fit. The angled steering tube clamp slot reduces strain on carbon steering tubes. Material: 6061 Alloy Bolt: stainless steel. Lengths: 60-120mm Angle: +/-30°. Clamp diameter: 31.8 mm. Clamp Width:40mm Handlebar diameter: 28.6 mm. Handlebar height: 45 mm. Weight: 136g (90mm) Colour: BB black.