Zipp Headset Spacer Set UD Carbon Includes 2x 4MM 1x 8MM 1x12MM 1x30MM

Zipp Service Course 6 Degree 31.8mm Stem Universal Faceplate In Blast Black 80mm. Zipp Service Course 6 Degree 31.8mm Stem Universal Faceplate In Blast Black 90mm. Imprecise spacers can cause your headset to loosen, affecting bike handling and component life.