Zipp Service Course SL -6 Degree Stem - Matte Black Size:90mm You will reduce chainring/cog shifts

You will reduce chainring/cog shifts by at least 15%

Frames will need a 46mm inner-diameter bottom bracket shell to accommodate this system

Center locking rotor interface

2mm Phillips head bit

we developed a shape with reduced frontal area

Zipp Service Course SL -6 Degree Stem - Matte Black Size:90mm You will reduce chainring/cog shiftsThe 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