HD-OEM: 51771-29Part Number: 13-9253 UOM: 1 - KIT Summary:Heavy duty seat post spring set includes a full set of 7 springs and 2 spacers. 9 pieces total in kit.Fitment: FL 1941-1980 UL 1937-1948 G 1936-1973 W 1936-1952 EL 1936-1940 Country of Origin: Imported