Ray-Ban's RB2140 Wayfarer runs a longer 150mm temple than most of its square-front siblings, finished in acetate rather than plastic or metal — both details this aftermarket pair follows. Getting the length right matters here specifically, since a 145mm arm, correct for other Wayfarer variants, will sit noticeably short on the 2140's frame.

Acetate arms are solid material rather than a hollow shell, so they don't crack the way plastic can — but they still rely on a small metal barrel set into the tip to carry the hinge screw, and that's the part that eventually works loose. Colour can also vary slightly between acetate batches, which is normal for the material and not a sign of a poor match. Where the barrel or the hinge itself is the problem, replacing the arm resolves it without touching the front.

Frequently asked questions

Are these official Ray-Ban replacement parts?

These are compatible aftermarket arms, independently produced to match the 2140's hinge and 150mm length. They aren't manufactured or supplied by Ray-Ban, just built to the same measurements so they attach correctly.

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

A new 150mm arm includes its own hinge barrel, so if the wobble is coming from worn threading on the arm side of the 2140, replacing it usually restores a snug, tight fold.

Is it worth buying new arms instead of a whole new frame?

Replacing both arms on the 2140 costs from €26.95 with free worldwide shipping, far less than a new frame, and it's backed by a 3-year warranty against manufacturing defects on the 150mm hardware itself.

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 2140 is broken or scratched, or buy the pair if both need replacing — either way they match the 150mm length exactly.