Product Overview
A absolutely top-of-the-line 1 1/8" threadless alloy headset for the most discerning rider. It features oversized, sealed cartridge bearings, so packing and re-greasing bearings are a thing of the past.
Stack height is 28mm with a 30mm split crown race for easy installation.
Upper - EC34/28.6
Lower - EC34/30
Replacement bearings can be found here.
Hot Tip - To promote the life of your headset bearings, every 6-8 months, take them out clean and re-grease (with a film of grease) But do not take the rubber seals off. Then, making sure to turn the bearings 90 degrees, drop them back into the cups.