I remember Wookieepedia says Twileks' lekkus are sensitive and losing a lekku is debilitating for Twileks. I'm not sure about Togrutas, for that male Togruta on Raada in the Ahsoka novel did have a lekku cut off without a cybernetic replacement but still lived mostly fine. Star Wars ships have artificial gravity, but fighter pilots do wear helmets, which means that there's still real risk of head injury. If losing a lekku is debilitating, then it makes sense to have PPE to protect the lekkus. But we see this:
Here Hera is flying an X-wing, but there's nothing to protect her lekkus, which are at a position easily hit, while other X-wing and imperial pilots with more human-like smooth heads all wear full helmets. So do Twileks and Togrutas have any sort of PPE for their lekkus, and for Togrutas, montrals as well?
I suppose montrals can be even trickier than lekkus since there seems to be considerable variation in size and shape of montrals among Togrutas. I don't recall Ahsoka ever wearing a helmet, except a space suit, nor did Clone Wars era Jedi wear helmets when flying fighter ships, unlike X-wing pilots; probably that's because the Force is strong with them. But I wonder what sort of helmet would a non-Force sensitive Togruta fighter pilot wear.