Zipp Service Course SL Stem - 90mm 31.8 Clamp +/-6 1 1/8" Aluminum Matte BLK B2

Zipp Service Course SL Stem - 90mm 31.8 Clamp +/-6 1 1/8" Aluminum Matte Black B2. The Zipp Service Course SL Stem crafted from 7075 aluminum features a shape that’s strong and lightweight resulting in a 1.85 grams per newton meter of stiffness. That results in no-flex sprints and accelerations.

Forged AL-7075

Machined and relieved faceplate

Features titanium hardware with TORX heads on all bolts for precision torque readings and ease of adjustment