FLO Freehubs are available in HG (Shimano/SRAM), XDR, Campy, and Campy Ekar. If you do not know when your wheel was manufactured, please use the following guide to help when selecting your freehub.
1.Two FLO stickers on each side = 2012-2015 model. FLO 30s also use this freehub model.
2.Three FLO stickers on each side = 2016-Current model.
1. Note: Only FLO DISCs manufactured after January 1, 2014 are compatible with 11 speed Shimano/SRAM cassettes. Campy hub bodies work with all FLO Wheels.
2. All disc brake FLO DISCs will require the rim brake version of the freehubs. For example, if you want an XDR freehub for a FLO DISC Disc Carbon Clincher you will selection, 2016-Current - Rim Brake - XDR.