That was one of the first pipes we made, its not really a rev run or any real name pipe. Just a MLM classic prototype. If my memory is correct it really wasnt made for any target cylinder, it was designed to be a 50cc kit / cheapo 70cc pipe. Nothing super fancy, just a general ripper.
Honestly dude, that pipe is nothing compared to the modern rev-run which Devin has fine tuned to perfection. But that doesn't mean that is a bad pipe, it just means that the new MLM pipes are just 5 times better then they use to be. That pipe will still blow away bosses and biturbos and other mass made pipes. Its not the best on the market, but you got it at a damn good deal for $100.