Originally Posted by mewantkouki

I parted out my Ka-t kit because I was planning on going with a built engine / full race stuff. That never came to fruition, so I ended up with an SR. It was pretty awesome, but I did end up breaking it. It was not the motors fault though. Tuned super lean and a 5th gear pull to 7500rpm is what killed it. KA vs SR is like comparing cool ranch to nacho cheese doritos. My experience with both motors was pretty awesome. I ran 25psi through my ka and 21ish through my sr so they were both capable. If I had to do it again, I'd go with a KA. It's 10,000X cheaper!