50/37 (RED only), 48/35 , 46/33
54/41 and 52/39 RED combinations are available in a kit with a special 2-Position front derailleur that allows these larger chainring combinations
1x = 36, 38, 40, 42, 44, 46 (ring+spider)
1x Aero 8 bolt direct mount = 48, 50 (RED only)