Been messing with my new bike. I know alot of people debate on here about aftermarket pipes and all. Yesterday I was trying out different things on the bike and the pipe was one of them. The biggest thing I noticed with the PC t-5 vs the stocker is on the top. The stock pipe drops off pretty significantly/abruptly where the PC pipe kept pulling and allowed you to stay in the same gear. The PC also revved out quicker and had smoother more manageable power. I tried a 48 tooth on the back and it sucked, just couldn't get into the power. Now have a 50 tooth (stock) and it rips. I'm gonna try a 51 tooth and see if I can't get more bottom and torque. Coming out of some turns with short runs into jumps it seems to be between gears. 2nd just isn't enough and third you have to clutch it too much. We'll see...always a progression.