LVWA full Carbon fiber road/MTB mountain Bike Sprint Stem, 100mm, SE011L Just as cyclists optimize performance by being as light but as powerful as possible, the Stem is an ideal balance of the stiffness and lightweight to be responsive without wasting a single watt. The stem weighs in at just 1.8g per newton meter of stiffness. The stem was designed with feedback from top pros to meet the unrelenting demands. We also tapped into expertise gained from its pioneering carbon stems and exhaustively researched the marketplace to create better Stem.