Moto, I understand "wheel hop" but not so much "bowing and tipping". I dont know if changing suspension parts will stop wheel hop. Sounds like you have a very bad tire balance problem or a very out of round tire. At what speeds do you see the tires coming off the pavement? I would start with having the tires checked for out of round, bubble in the tread or very much out of balance. BTW, the tires are NOT balanced from the factory.