Zipp Service Course SL -6 Degree Stem - Matte Black Size:90mm With the open alternating-lugged design

With the open alternating-lugged design and full siping

which improves the ergonomics and reduces the shifting forces by 20%

The frame secures the interchangeable lens with a simple interlocking system

we developed a shape with reduced frontal area

which is then paired with an ultra-fine Corespun-T casing

Zipp Service Course SL -6 Degree Stem - Matte Black Size:90mm With the open alternating-lugged designThe Zipp Service Course SL Stem, crafted from 7075 aluminum, features a shape thats strong and lightweight, resulting in a 1. 85 grams per newton meter of stiffness. That results in no flex sprints and accelerations Features Forged AL 7075Machined and relieved faceplateTitanium hardware with TORX heads on all bolts for precision torque readings and ease of adjustment Specifications Material: AluminumS. H. I. S. Stem Clamp Diameter: 28. 6Bar Clamp