The pads on the back of my 2002 F250 were worn out so I bought a new set of pads and rotors to match them. Power Slot 126.65071CSL Slotted Disc Power Slot 126.65071CSR Slotted Disc Hawk Performance HB303Y.685 LTS Brake Pads I did not initially look for new calipers as mine were in good condition and worked perfectly. Without thinking, I slammed on the brakes without putting the calipers back on the rotors, and a seal burst in one of them. Then I decided to throw some extra cash on the back and get these calipers. I'm glad I did, they look amazing. The red color gives it a high performance look and the powder coating should last for years. Contrary to another review, they come assembled and oiled. There was a light coating of clear fat on the fingers and butt. Since the old reviews seem to say they didn't, I took apart the calipers and applied some more grease to the pinholes and the surface and boot of the pistons. Installation was a breeze. A little tip my father-in-law shared with me was to fill the calipers with brake fluid before installing the banjo bolt, this will make the bleeding process much faster.