Honda Civic 5th & 6th generation OEM strut brace for sale. Red colour, mint condition. Open to reasonable offers.
Unlike aftermarket ones, it is mounted on the chassis, and doesn't ride on the struts so understeer is reduced.
AFAIK 5th gen Civic has a couple of holes on each side, covered with rubber inserts, this thing is bolted right there. In 6th gen, however, you'd have to drill them by yourself. Location has been provided by the factory.
Pictures for reference: