The RX3946V Clubmaster Oval's rounded front calls for a 145mm acetate temple built to the same curve, sized specifically to this model rather than the squarer Clubmaster variants in the same family. A compatible arm needs to follow that oval curve closely, since a straighter substitute will sit visibly off against the rounded front.

Acetate can shift slightly in shade after years of sun exposure, so a new temple matched to a fresh swatch may sit a shade brighter than a frame that's several years old. It's worth checking the arm against the front in daylight before assuming it's a mismatch rather than just natural fading. A compatible aftermarket arm in the right shape still restores a good structural fit even if the tone isn't a perfect match. A short comparison against the frame in daylight settles the question either way before you commit to an order.

Frequently asked questions

What if the arms arrive and the hinge doesn't line up with my frame?

Because each pair is listed against a specific model, in this case the 3946, mismatches are rare, but you're covered by a 14-day return window if the 145mm arms don't align with your hinge.

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

Replacing both arms on the 3946 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 145mm 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 3946 is broken or scratched, or buy the pair if both need replacing — either way they match the 145mm length exactly.

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

A new 145mm arm includes its own hinge barrel, so if the wobble is coming from worn threading on the arm side of the 3946, replacing it usually restores a snug, tight fold.