The Zipp Service Course Stem provides everything you need in a stem: strength, stiffness, reliability, and a precise fit, all with a sleek, modern look. Engineered for performance, the Service Course Stem features a body and faceplate design for enhanced stiffness, making it easy to install while optimizing stability. Crafted from AL-6061 aluminum, it boasts an impressive stiffness-to-weight ratio, resisting flex during sprints and accelerations to meet the demands of serious riders. Key Features Optimized Design for Stiffness and Installation : The geometry of the faceplate and body enhances stiffness and streamlines installation, ensuring a secure fit. Versatile Aesthetic Options : Available in bead-blast black or bright silver to suit your style. Range of Lengths for Precise Fit : Multiple length options (from 60mm to 130mm) to suit any riding preference. Leading Stiffness-to-Weight Ratio : 3D-forged construction maximizes strength without adding unnecessary weight. Secure Four-Bolt Faceplate : Uses Torx® T25 bolt heads for secure attachment. Zipp QuickView Mount Compatible : Integrated mount available separately for added versatility. Backed by Zipp's Lifetime Warranty : Learn more about Zipp's Lifetime Warranty here for confidence in your purchase. Specifications Material : AL-6061 Aluminum Stem Angle/Rise : ±6° Length Options : 90mm, 100mm, 110mm Clamp Diameter : 31.8mm Steerer Clamp Diameter : 1-1/8 in Color/Finish : Bead Blast Black, Bright Silver Hardware : Steel Face Plate Bolt Distance : Horizontal - 27mm, Vertical - 42mm Weight : 152g (based on 6° 100mm stem)