NSb, присмотрись внимательнее, у тех же Trek...
Alpha Silver Aluminum w/externally relieved head tube, bi-axial down tube, disc compatible dropouts, replaceable derailleur hanger
Alpha Silver Aluminum w/semi-integrated head tube, bi-oval down tube w/integrated gusset, rack & fender mounts, disc compatible dropouts, replaceable derailleur hanger
Alpha Gold Aluminum w/semi-integrated head tube, formed down tube w/integrated gusset, formed top tube, monostay seatstay, forged dropouts w/rack fender mounts, replaceable derailleur hanger
Alpha Platinum Aluminum w/semi-integrated head tube, butted formed top tube, hydroformed down tube w/integrated gusset, bridgeless seatstay, forged race dropouts replaceable derailleur hanger