1.9 gearing?
 

i am using some sdi trail docs and my trucks slower than it was stock. and today i put the stockers back on and its way faster. how do i get it back to stock speed? is it because the tires are small? i am thinking about getting some 1.9 stompers or trail docs xls

its because the rolling diameter of the trail docs is smaller than the stock tires. smaller spur and a larger pinion would solve this. but i dont know what spur and pinion will be right for you.

i knda figured it was the tires. im getting bigger 1.9s when the xls come out since the stompers are 50$