Hi all, Some of you may have seen that aprilia are offering a "max performance pack" with the sale of RS-125s which includes a full arrow exhaust, jetting kit and a stand. So its $500 at your first service if you buy a new bike. I got this installed on my 08 125 just recently, and holy shit what a difference! I don't think my bike was running particularly well, I know there are some cats in the exhaust to meet euro 3 regs and it may have been choking it badly, but I haven't ridden another stock late model rs125 to compare. Stock I often had trouble with stuttering, and under load the bike would hit powerband and just die in the ass. The exhaust note would change as the powervalve opened, but the bike just died and wouldnt pull through the powerband at all. Initially I put it down to just being a teeny tiny little engine that couldn't pull my fat ass up the hill... but after changing the pipe the bike is transformed. It revs so much more freely now, keeps pulling up to 11,500rpm, and the powerband has much more kick than before. It has made the bike so much more fun to ride. Probably how it was meant to be before they crippled it to meet euro 3 regs. Sounds pretty good aswell, angry lawnmower style. I strongly recommend this upgrade kit for anyone that buys a new 125, and for those of you with a euro3 rs125, go get some sort of pipe and jet kit... You won't regret it.