Stems don't get much attention until something feels wrong—bars that sit too high, reach that doesn't match your flexibility, or a stack of spacers that looks like it belongs on a different bike. The Zipp Service Course SL addresses fit adjustments with a 7075 aluminum construction that keeps weight reasonable while offering the length and angle combinations most riders actually need. It's the kind of component that disappears into the build once you've dialed in your position, which is exactly what a stem should do.

The 6-degree rise works for the majority of road setups, providing a slight upward angle that doesn't dramatically affect stack height while maintaining a relatively aggressive position. Zipp machines the Service Course SL from forged aluminum rather than casting it, which allows for thinner wall sections without sacrificing clamping strength at the steerer or handlebar interfaces. The four-bolt faceplate distributes pressure evenly across the bar, and the hardware uses a captured washer design that keeps bolts from backing out during installation or riding.

Weight stays competitive with carbon options in this price range, which matters if you're building up a bike where every component contributes to the final number on the scale. The 31.8mm clamp diameter fits modern oversized handlebars, and the 1-1/8" steerer interface covers the vast majority of road and gravel forks currently on the market. Lengths run from 70mm up to 130mm in 10mm increments, so you can match your current setup exactly or experiment with reach changes without committing to a custom solution.... Read More