Is the store armor exclusive to the store?

Im just curious if they ever said anything or explained if there is another way to unlock store items eventually. Because like the shoulder pads in the armor bundle but I dont wanna buy it so im curious if we can ever get them through challenges or something.

Yes, it’s exclusive (I think).

They’ve said each armor unlock is specific to that unlock method
(to respect player’s investment of time in unlocking it, or in this case, their investment of money)

Here you go:

One of the team’s core pillars for player customization is ensuring that each unlock come from a single consistent vector. With our Player First design pillar, we want to ensure that we’re respecting players’ time for unlocks they’ve earned and purchases they make. For customization, this means ensuring that each unlock comes from a consistent vector. If you choose to purchase a Battle Pass, the content within that pass won’t be offered via any other means. Similarly, customization content a player earns during a Seasonal Event won’t be obtainable again via different avenues.

Source: Inside Infinite - September article