The trek domane alr frameset 2018 uses 200 series alpha aluminium isospeed invisible weld technology e2 tapered head tube bb865 direct mount brakes hidden mudguard mounts and is also duotrap s compatible thr fork is a domane carbon with an e2 steerer and direct mount brakes trek domane alr frameset 2018 features the smooth advantage rear isospeed doubles compliance to conquer even the roughest roads lightweight aluminium frame delivers an ultra efficien