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Amazon.com : Garmin Tacx T2875.76 SRAM XD-R Exercise Fitness Cycling Standard Body for 11 and 12 Speed Bike Cassettes and Tacx Neo 2T Drive Trainers, Type 2 : Sports & Outdoors
Which freehub body do I need? SRAM and Shimano 9, 10, 11 and 12-speed MTB setups explained | off-road.cc
SRAM XD Driver Freehub Body - 11/12 Speed, For 746 Rear Hub, Includes | Worldwide Cyclery
SRAM explains XDR freehub body, which will make 12-speed road possible - Bikerumor