Zipp Service Course SL Stem

This stem is constructed from high-strength 7075 aluminum. This material choice is intentional, balancing the need for a lightweight build with the structural integrity required for aggressive road riding.

The Service Course SL is designed for standard road bikes with a 1-1/8 inch steerer tube and a 31.8 mm handlebar clamp diameter. Please verify these measurements on your current bike before purchasing to ensure compatibility.

The +/- 6-degree angle allows you to flip the stem to either raise or lower your handlebar height. This provides flexibility to fine-tune your cockpit for either a more upright, comfortable position or a more aggressive, aerodynamic tuck.

Yes. The stem is engineered with a high stiffness-to-weight ratio, which helps minimize flex during high-wattage efforts like sprints and rapid accelerations, ensuring efficient power transfer.

This stem has a stack height of 41 mm. This measurement is important because it dictates how much of your steerer tube the stem clamps onto; you will need to ensure you have enough steerer tube length available to accommodate this height.