TREK 8.2 8.3 8.4 8.5 DS 8000 Mtn Alpha - Rear Derailleur Gear Mech Hanger CC013

(a) Your existing hanger, back and front, preferably having removed from your bike & rear derailleur, OR. Bontrager is owned by Trek as well and that's why you will very often see Bontrager parts on Gary Fisher, Trek and Klein mountain bikes.