5mm gears?

[lincpimp]

well, guessing that you will use the emaxx tranny and diffs and a stock sized tire. That gearing would give you about 32-34 mph in 2nd gear. I gear all my stuff for 40 so an 18 tooth would be my starting size and test from there. I have a felling that the 1515 1y would not get hot with a 18, but you could start with the 15 to be on the safe side and gear up during testing.