If a temple has snapped on your Ray-Ban 4068, matching the replacement to spec is what determines whether it fits — 130mm long, molded in plastic, and shaped for the 4068's square front. This aftermarket pair is built to those three figures rather than to a general 'RB4000 series' fit, since hinge position shifts between models even within the same family.

Plastic temples that have spent years in direct sun often turn brittle before they show any visible damage — the arm can look fine and still snap under normal flexing at the hinge. That's usually the reason one arm fails while the other, on the same pair, still seems solid. Since the front frame rarely wears at the same rate as the arms, swapping just the temples is normally the better economics.

Frequently asked questions

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

A new 130mm arm includes its own hinge barrel, so if the wobble is coming from worn threading on the arm side of the 4068, replacing it usually restores a snug, tight fold.

Are these official Ray-Ban replacement parts?

These are compatible aftermarket arms, independently produced to match the 4068's hinge and 130mm length. They aren't manufactured or supplied by Ray-Ban, just built to the same measurements so they attach correctly.

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 4068 is broken or scratched, or buy the pair if both need replacing — either way they match the 130mm 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 130mm arm to your 4068 frame — the whole swap usually takes under five minutes.