The carbon gear was $27 plus shipping from tntlandinggear.com. The carbon fiber shafts I got for free through my model club president. I'd look at the servo documentation that you currently have. It will show the torque for 4.8v and 6v. See if the 6v torque is what you're looking for. My opinion is that it would be more than adequate and certainly save you some money. I think I'm going to take a picture of my plane tonight and post it here so you guys can check it out.