If it fits and has no possibility to move around (or brake up), there is no risk, especially when one use those nice latches for useless plastic cover. But, there are other potential problems: fire (thermal) safety and pedestrian (collision) safety. First -- during charging or hot weather the measured temperatures under the hood reach even over 50°C, so one should use a frunk which is thermal resistant enough. Second -- it is a possibilty that the empty space under the hood is neccessary as a crush zone when pedestrian's head hits a hood. Maybe, but nor really for sure, as everyone who saw NCAP crash tests films know, that during those events head hits rather windscreen or the hood's edge than the center. But, the last apprehension -- what about potentially breaching of warranty conditions and responsibility in case of accident?I recently brought my Kona in for the service update. When chatting with the service tech who received my car she told me about all the Kona Electric owners that come in loving their cars. Except for one who had major problems with his. She said they installed a frunk and it somehow broke loose under the hood and did significant damage...mostly electrical. She pointed out that the posts that support the plastic cover on top of the motor are not intended to carry much weight. Loading up a Frunk or putting a spare tire in there is a risky proposition. It might work fine, or it might cost you a lot!