Originally Posted by
elex300
What pinion are you using for the Pro4 4000 on a medium size track. I used a 14t with my 4600 so I was thinking 15t or 16t for the 4000. Sound about right?
That should be a good place to start, I have a 15 on mine and it comes off pretty warm, 165-170... But we have a ton of bight and I can hammer it in the corners!