mountain bike - 11 speed MTB cassette on 11 speed road hub (once again!) - Bicycles Stack Exchange
Issue with rear hub: installed an 11-speed cassette. Noticed it was loose after tightening. Took to bike shop. They added 2 spacers to eliminate rattle of the cassette. Now the smallest gear
Bicycle rear hub compatibility | BikeGremlin
Amazon.com: Road Bike Hubs 24/28/32/36 Holes Bearings Hub Set Front 100mm Rear 130mm QR Bicycle Hub V Brake HG Freehub for 8/9/10/11 Speed Cassette (Color : Black 24H) : Sports & Outdoors