I have had mine up to 125 once. It felt effortless as well...it was very smooth...no different really than say 80. I didn't see what it was taching, but it was still pulling HARD!!!!!!
Benefits of the military...Being stationed in Germany. 150 on the autobaun. Scared the crap outa me. I'll never do it again, but I'm happy to say my pony has done it. 4th gear last a long time btw. Never shifted to 5th.