Do I need to store low-level Set Items?

[Anubis75]

Do I need to store low-level Set Items?
Or can I drop them away?
Because the inventory size is limited.

[Fel]

Most of them you can throw away, you'll be able to easily drop them again later on if you decide you need them anyway, with higher adventure stats and drop chance.
There are exceptions that you probably want to keep, most of them are accessories that give special bonuses outside of energy/magic power/cap/bar, like drop chance, gold drops, yggdrasil yield/seeds or NGU speed.

[Anubis75]

Thank you , I understand.

[0xBADDAD]

Before you throw them away make sure you level them to 100 for the bonus.

[Hoffman]

Typically with armor and weapon, you can get rid of them when you get a stronger set. However, sometimes if they have the 'Bars' stat, you can keep it to make your rebirths faster. There are also some pieces that give other bonuses, like Walderp's boots.

Accessories are usually worth keeping for a little while longer as they give bonuses that are situational. The Sands of Time are very useful for killing Titans, that's the first truly valuable item that you hold onto for a long time.

You can also unlock more item slots through spending xp, ap, pp, etc. As you collect more valuable items you need to start buying slots to keep up. Also, once you unlock auto-boosting and auto-merging, item slots become a lot more useful.