11-Speed Front Mech Hanger for SL Carbon Frames This original replacement front derailleur hanger is compatible with all current Ribble SL & SL R Carbon framesets & is a direct replacement for the original lost or damaged hanger, whilst also enabling conversion from a 1x gear system to a double ring setup. Ultra SL R & Ultra SLEndurance SL & Endurance SL Disc Endurance SL R & Endurance SL R Disc Endurance SL e CGR SL & Gravel SLCX SL