Stillen big brake systems are very complete. each axle kit comes with two high performance calipers, two high performance cross-drilled and slotted 13'' or 14'' rotors, high performance brake pads, brake lines, hardware, spindles (if needed) and instructions. we highly recommend using the installation opportunity to change out the old brake fluid as well. a brake fluid developed to withstand higher temperatures (like the motul brand) is ideal for performance oriented drivers. actual product may vary slightly from image.