Brake calipers rebuild kit for front calipers (for the couple of calipers), allows to restore the total efficiency of the brake calipers lost during the kilometers of use, it's recommended to completely replace the brake fluid.
Other applications:
XJ 550 1983 (only version with two caliper)
XJ R Seca 750 1981 TO 1983
XS L Midnight 1100 1980 TO 1981