Zipp's Service Course SL OS Stem, crafted from 7075 aluminum, features a shape that's strong and lightweight, resulting in a best-in-class 1.85 grams per newton meter of stiffness. That results in no-flex sprints and accelerations. This stem is a favorite of Zipp ambassadors and pro athletes.
- Distinctive Zipp cosmetics
- Wide range of sizes and angles.
- Service Course SL OS stem made for 1-1/4" steerer tube bikes. Ships with shims for 1-1/8" steerer tubes
- Zipp Quickview integrated computer mount available separately
- Lifetime warranty