So I originally had T5's on my serval and I could tell they had alot more low end pull than these rockets. That being said, with these rockets I still have so much low end in the trails that I don't really want anymore. They pull very clean compared to the T5's and they pull alot longer. The T5's were hard to use on the serval in the trails because they were not smooth like the rockets, they seemed to be rather jerky in my opinion. I would say that on the serval the rockets are way better all the way around that the T5's. When I ran the T5's I also had the stock carbs. With the rockets I'm running 35pwks