Material: 6061 alloySizes: 15.5, 17.5, 19, & 21`Head Tube: 44mm (1-1/8â) Top / 56mm (1.5â) BottomSeat Tube: 30.9mm I.D. / 34.9mm O.D.Rear Dropout: 190mm O.L.D.Brake Mount: IS for 160mm rotorBB Shell: 120mm threadedTire Clearance: 4.9âDesigned to accommodate a fork with a 468mm axle-to-crown measurement and 45mm offset------------------------------------------------------------------------------------------Replacement Hanger: P/N 670498Complete Bike PNs: 670692, 670693, 670694, 670695UPC/EAN/GTIN: 888571051566