attacco manubrio fsa ns smr b1 31 8mm 6Leveraging FSA's expertise in producing headsets, handlebars, and stem clamps, the SMR system provides a "plug in" solution for frame builders aiming to route cables and wires inside the frame. Smart Cable Routing (SMR) Forged 3D AL6061 aluminum and CNC machined Aluminum faceplate Chromoly hardware 6 x L90, 100, 110, 120, 130mm Clamp 31. 8mm 33. 5mm fork clamp stack height Fork size 28. 6mm Type Handlebar clamps Discipline ROAD, GRAVEL Material