At just 113g for a 100mm extension, the Energy stem represents cutting edge aluminum construction At just 113g for a 100mm extension, the Energy stem represents cutting edge aluminum construction The shape is 3D forged from 2014 aluminum for great strength, with the final refinements carried out by CNC machining 4 bolt sculpted SL faceplate with chromoloy hardware Finish: sandblasted black with polished black anodized