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
