If your Razer BlackShark V2 foam ear cushions are shedding particles or detaching from the device (Razer Blackshark V2 Troubleshooting Page, "Ear Cushions Falling Apart"), this guide will assist you in their replacement. Be sure to be mindful of which layer of the headset assembly you're taking apart and that you don't adversely damage any holds, the rubber lining under the cushions, or the headset itself when applying pressure.
Once the cushion is removed, make sure the hard plastic base with the clips is attached to it.
If you are replacing both ear cushions, repeat Steps 1-4 for the other side. Then, insert the new ear cushions by lining up the clips in their respective holes and applying even pressure until they audibly click.
Thanks - this was very helpful. It was difficult to remove the retainer clip using my fingers - I found it much easier to use the back of a spoon (with a rounded edge) and getting more leverage that way.