Progressive springs offer a soft initial spring rate for a plush ride Progressively wound design provides increased resistance to bottoming as spring compresses Improve handling while retaining OEM geometry Made in the U.S.A Incluido espaciador de 10.00". Marca : PROGRESSIVE SUSPENSIONReferencia del fabricante : 11-1145Coeficiente dureza de muelle : 0,71 kg/mm - 1,16 kg/mm (40,00 lb/in - 65,00 lb/in)Diámetro exterior : 34,00 mm (1,35")Longitud : 457,00 mm (18,00")Nombre de producto : MuelleTipo : HorquillaUnidades : Pareja