The Ray-Ban RB8317 is an aviator built entirely in metal, front and 140mm arms both, and takes a 58mm lens. That all-metal construction sets it apart from the plastic-front aviators elsewhere in the catalog, and this aftermarket lens covers the usual solids, gradients, mirrors, a photochromic grey, and a clear AR option for prescription use.

All-metal aviators like the RB8317 rely on the lens edge sitting flush against a thin rim, so a lens cut even slightly off spec tends to show a gap sooner than it would on a thicker plastic front. Gradient and mirror tints are both common choices here, since the aviator shape was built around exactly that kind of finish, and the 140mm arm length is worth checking against your current pair before ordering, since metal arms don't stretch the way plastic ones sometimes do.