A:Answer No. There are no larger cups for the BL series Ninja Blenders. Just the 160z. I've been looking too for my BL770.
This will NOT fit the following:
BL660 (1100 watt), BL663 (1100 watt), BL740, BL770 BL771 BL772 (1500 watt), BL780 (1200 watt), BL810 BL820 BL830.