Freehub body by wheel brand
Every wheel brand offers freehub bodies for different standards — Shimano HG, SRAM XD/XDR, Micro Spline, Campagnolo/N3W. Pick your brand to see which bodies it takes, how to choose by speed, and open the manufacturer's official spec.
DT Swiss 6 standards Mavic 6 standards Fulcrum 5 standards Campagnolo 4 standards Ruote Shimano 4 standards Zipp 3 standards Bontrager (Trek) 4 standards Roval (Specialized) 4 standards Novatec 5 standards Hope 5 standards Giant 3 standards Miche 5 standards Vision (FSA) 3 standards
Indicative data from official sources and authoritative retailers; for the exact model the manufacturer's spec is what counts.