ENVE's Mountain Stem picks up where the original ENVE Stem left off, and gets a little shorter, a little lighter, and a little more mountain looking in this iteration. Only the longest option, at 85mm, weighs in at over 100 grams. That's light, and that's all in weight: stem, aluminum faceplate, and Ti hardware. And, the engineers over at ENVE told us that they threw out more designs and prototypes of this stem than any other product they've designed, because they wanted to get it just right. We think it shows in the finished product.