Velo Orange - Spacer for 10 Speed Cassettes on 11 Speed Freehub Body
Top Tip: When fitting a 10 Speed Cassette to an 11 Speed Free Hub, you must use a 1mm and 1.8mm Cassette Spacer to ensure ther… | How to run longer, 8mm, 10 things
maintenance - 7-speed MTB cassette on 8/9-speed wheel hub, where does spacer go? - Bicycles Stack Exchange