Headset spacers serve a simple mechanical function—they set your stem height and preload your headset bearings. The Zipp Headset Spacer Set delivers that function in UD carbon fiber, which matters if you're running a carbon steerer and want visual consistency through your cockpit stack. The set includes three spacers in 5mm, 10mm, and 15mm heights, giving you 30mm of total adjustment range to dial in your position before committing to a steerer cut.

UD carbon construction keeps weight minimal while maintaining the stiffness needed to properly preload headset bearings. The unidirectional weave pattern matches most carbon steerers and stems, avoiding the visual clash that alloy spacers create in an otherwise carbon cockpit. Internal diameter fits standard 1-1/8" steerer tubes, which covers the vast majority of road, gravel, and mountain bike applications.

Running multiple thin spacers versus fewer thick ones comes down to adjustment flexibility. If you're still experimenting with position, stacking several 5mm spacers lets you make incremental changes. Once your fit is locked in, you can consolidate to fewer spacers or use this set to hit your exact height in one or two pieces. The matte finish resists showing fingerprints and cable rub marks that accumulate on gloss carbon over time.... Read More