Wash and dry the entire trunk lid. Wipe the mounting zone with isopropyl alcohol and allow 60 seconds to evaporate before proceeding.

From inside the trunk lid, locate and remove the T20 Torx fasteners retaining the factory spoiler. Lift the OEM spoiler clear of the trunk lid.

Set the carbon spoiler onto the trunk lid without fastening. Verify even gap alignment across both ends before committing.

Insert included hardware through OEM mounting holes. Hand-tighten first to confirm alignment, then snug down with T20 Torx screwdriver. Do not overtighten carbon fiber components.

Close the trunk and inspect the spoiler from behind the car. Check for even overhang, flush contact with the trunk lid, and consistent gap across the full width.