The Ray-Ban RX6456 has an irregular, sculpted metal front paired with 140mm metal arms shaped to follow that asymmetry. This aftermarket set is cut to the same irregular profile, so the arm curves into the hinge the way the factory temple did instead of the simpler bend used on a standard square or round frame. Because the shape isn't symmetrical, the two arms aren't always interchangeable side to side, so it helps to note which one came off which side before ordering a single replacement.

Irregular fronts like the 6456's don't distribute hinge stress evenly, so one arm can loosen noticeably before the other does. It's worth checking both sides rather than assuming symmetry, and swapping only the arm that's actually worn is usually enough — there's no need to replace both temples at once. Fitting one side at a time and testing the fold before moving to the other side also helps catch a mismatch early.

Frequently asked questions

Can I replace just one arm, or do I have to buy both?

You can order a single side if only one arm on your 6456 is broken or scratched, or buy the pair if both need replacing — either way they match the 140mm length exactly.

Do I need a specific screwdriver to attach these myself?

You'll need a small eyeglass screwdriver, typically included in basic repair kits, to remove the old hinge screw and attach the new 140mm arm to your 6456 frame — the whole swap usually takes under five minutes.

What material are the arms made from, and will the color match my frame?

The arms are molded in an acetate or metal finish that matches the Irregular style of the 6456 closely, though very slight shade variation is possible since they're independently produced as separate aftermarket parts rather than cut from the same batch as the frame.

My hinge feels loose — will new arms fix that, or is it the frame that's worn?

A new 140mm arm includes its own hinge barrel, so if the wobble is coming from worn threading on the arm side of the 6456, replacing it usually restores a snug, tight fold.