... XPRESS single speed road bike for sale, fixed gear bike Specification: Frame: 4130 CHROMOLY STEEL/ 6061 alloy frameSize: 48/52/54/56 ... Chromoly steel, 700C*OD28.6*30Stem: alloy, forged, 4 bolts, 15'*90mmHandlebar: alloy 22.2*470mm*30mm, drop handle barChain wheel: MICHE ... XPRESS, BCD 135 BB30Chain: MICHE PISTA, 1/2"-1/8", Nichel-plated steel, 110 links, 313gFreewheel ...