Zipp Headset Spacer Set UD Carbon (4mm x 2 8mm x 1 12mm x1 30mm x 1) model-34mm air spring Compatible with LINKGLIDE and HG

Compatible with LINKGLIDE and HG 11-speed chains

X-Large Cuff Length 5 Defined Color Black

Wind tunnel tested using Computational Fluid Dynamics (CFD) with the goal of maximizing aerodynamics while enhancing stability

39 - 54mm reach

Water-repellent and wind-resistant

Zipp Headset Spacer Set UD Carbon (4mm x 2 8mm x 1 12mm x1 30mm x 1) model-34mm air spring Compatible with LINKGLIDE and HGZipp Headset Spacer Set UD Carbon (4mm x 2 8mm x 1 12mm x1 30mm x 1). Imprecise spacers can cause your headset to loosen affecting bike handling and component life. Lightweight and precisely parallel Zipp carbon headset spacers are precision ground to keep your fork secure through every twist turn and bump in the road. 1 1 8" diameter in 4 (x2) 8 12 and 30 mm heights UD carbon fiber finish TECH SPECS Color Carbon Material Carbon Defined Color Black S.