Easton EA90 SL Stem - 70mm 31.8 Clamp +/-7 1 1/8" Alloy Black. Eastons lightest aluminum stem is the choice of road racers and top XC pilots alike. The advanced EA90 aluminum tubing and 3D forging process results in a perfect blend of strength and weight. Eastons patented DST distributes clamping forces more evenly over a larger area making it the stem for todays lightweight aluminum and carbon handlebars.