ALLOY FRAME, DOWNHILL BIG FORK WITH ALLOY CROWN, DOUBLE WALL ALLOY RIM, 26*2.35 BLACK TIRE, ALLOY HANDLEBAR, ALLOY TWO PCS STEM, ALLOY CRANK AND STEEL CHAINWHEEL, ALLOY HUB, F & R DISC BRAKE, SHIMANO TY18+TY40+EF29 DERAILLEUR.