I put a set of snipers on my 10mill cub. switch out from shearer bb's. all I can say is wow. The mph was the same but they pull so much harder from the get go, They changed the gearing a good bit, I was shifting into 5th right at the finish line. So once I get the gearing right im sure they will pull more mph as well. They pull harder but also rev out longer and you can hold the gears longer.
I did not do the greatest due trowing a chain and I had to forfeit my next run because I bent my sprocket and could not get it fixed in time for the shoot out class which gave me my first loss in that class and we where in round 3 when that happen. Like I said before I know once the gearing is right the cub will pull I would say at least 2 more mph over the shearers.
All of the bigger bikes,10-20 mill dm,twister,cheetahs and snowmo where running an average of 6.0-6.1 and a couple of them ran a 5.9 in 500ft.
I also turned a 5.9 @94mph last night. I ended up with 2end in the one class and 5th in the shoot out class.
So I will say these pipes do what they say they will, The bike just pulls so much harder all the way through. Once I get the gearing right I would say the cub is going to be a good bit faster I would think.