The item arrived well packaged, just the item and installation instructions were included but no reference to compatible required pads or lines however those are also available through Japanparts or another aftermarket supplier requires 04-07 STI brake components for the calipers)

Preparation: Installing these will require having the compatible rear backing plate or brackets, rotor, pads, brake lines, and retaining hardware for the pads (sold separately).

- Lift vehicle using jack and place on stand.
- Remove wheel
- Disconnect old brake line from old caliper then bleed/flush brake fluid until it runs empty
- Remove old caliper by unbolting from backing plate.
- Remove old rotor.
- Replace old brake line with compatible lines for the big brake upgrade.
- Depress new caliper pistons with tool to prepare for pads installation.
- Install upgraded rotor.
- Install compatible pads with shims and retaining hardware then position onto rotor then secure to backing plate with required bolts.
- Secure other end of new brake line to caliper.
- Fill Brake reservoir with recommended fluid then perform brake fluid bleeding until air pockets are removed.
- Replace wheel then secure with lug nuts.