S-foil
the wing assembly of an X-wing. The wings are connected diagonally, and when the S-foil is moved into attack position, the opposing wings spread apart. On an X-Wing, this results in the characteristic X-shaped wing pattern. On a B-Wing, it brings the wings upward to form the well-known cross-shape wing pattern. The name S-foil is a shortened term for Strike Foil, the original name used to describe these wings by Incom Industries.