Easton EC70 SL 6 Degree Carbon Stem. With the Easton EC70 SL stem, Easton's engineers combined aluminum and carbon fiber to make this one of the stiffest stems available. Its weight is impressive, too, at just 140 grams for the 100mm length. Easton certainly has a long track record of technological innovation and their experience shows with the EC70 SL. Easton leverages their exclusive TaperWall technology and a touch of titanium hardware plus their proprietary Distributed Stress Technology and Top Lock faceplate to boost performance. And aesthetics wise, the EC70 SL stem just makes any bike look that much sleeker.