Amazon.com : 12 PCS Bicycle Headset Spacer Bike Handlebar Stem Spacers Threadless Aluminum Alloy Headset Stem Spacer Set Fit 1 1/8-Inch Stem For MTB BMX Mountain Road Bikes Cycling 2MM 3MM 5MM
Many thanks to u/tanvach for making their Quest 2 IPD expander free to use for the community. I have an IPD of 71mm and this makes the headset SO much more comfortable! :
Headsets Headset Spacers | Windwave UK
Amazon.com : 12 PCS Bicycle Headset Spacer Bike Handlebar Stem Spacers Threadless Aluminum Alloy Headset Stem Spacer Set Fit 1 1/8-Inch Stem For MTB BMX Mountain Road Bikes Cycling 2MM 3MM 5MM
Source Spares Headset Spacers | Source BMX - EU
suspension - I removed my fork from frame, and forgot the order of the headset spacers and bearing races, what do I do? - Bicycles Stack Exchange
Montague Boston Overhaul II: Headset | Montague Bikes
Amazon.com : Ritchey Spares Wcs Headset Compression Device, Black, 1-1 8 UK : Bike Suspension Forks : Sports & Outdoors
Headset Spacers – White Industries
Is the spacer in this threaded headset optional? : r/bikewrench