Iteration of the Zipp Service Course Stem levels up on this classic go-to road stem. With a redesigned faceplate and body, it is stiffer and easier to install than its predecessor. The bead blast black finish coupled with a clean Zipp logo makes this stem a suave addition to your perfect build. Features: High-strength and low weight AL6061 construction Smooth lines to complement the aesthetics of modern frames Strength, stiffness, and reliability at a weight of 130 grams (100mm) New faceplace and body geometry for greater stiffness and easier installation Mounts using four Torx T25 bolt heads Specifications:Bar Diameter: 31.8mmSteerer Diameter: 1-1/8" (28.6mm)Length/Reach: 60, 70, 80, 90, 100, 110, 120, 130mmStem Angle: 6Adeg, 25AdegStack Height: - Material: AluminumColor: BlackWeight: 130g (100mm)