I emailed to tekno to see if they had anything and at this time they don't and don't have plans anytime soon. I will email mip to see if they will sell just the adapters. I imagine they will because it would be foolish of they to not sell the parts seperatly.
How are these buggys working out so far? Any durability issues? What kind of run time are these getting? What motor and battery combo is working well?