2015 Mustang loud rear-end clunk (15s into video)

Clunk coming from rear-end when pulling off, does not always do it. Feels like maybe some lose in rear. Is not a deep thud so am rulling out differential. Maybe drop link? Any ideas?

[Salman_Makki]

I think its from the lowering spring. Because i had the same problem with mine also.

[HeLLLoKitTTyy]

Same on mine backing up over a bump, lowered on eibach

[Salman_Makki]

I have da same thing on my Manual stang specially in reverse

[mbk]

Noticed you went with lower springs, did you also change the rear differential bushings? If so, I heard such clunks could be a by-product of stiffer bushings.

[dowithheart]

My mustang has this problem as well. That's the reason I found this video. Lol. Btw, have you find out what's wrong with it? And where's making noise?