Rear air bag bump stop

[customdavez]

Hello, new 2006 Lexus GX470 here. I just had new tire installed today and the shop jacked up the right rear air bag. I started driving it and the vehicle felt wrong. Took it back to the shop and I saw the air bag was not sitting right. Well we got it straightened out but that short drive rubbed a hole in the bag. Shop is replacing the bag but I noticed a bump stop on the bottom of the air bag is gone. Look at the pictures. So anyway does anyone know where I can get a replacement bump stop and not from Lexus. They want $80 for it. Thanks.

[customdavez]

Ok so I guess I am asking is one bag an aftermarket and one bag stock? Talked to Lexus and they said the only way to get that piece is with the air bag...