Will a slip on m4 exhaust alter my restriction?

[Brad650]

Hi guys I have a 2007 (57 plate) sv650s. I am considering getting an m4 slip on exhaust for it but I don't want to alter my 33 bhp restriction. Has anyone been in this position? Because I have no idea how the slip on would effect the bike other than sound! Cheers

[mikerj]

No, it barely makes any difference to an unrestricted bike so it's not going to do anything except make a bit more noise on a restricted one.

[Drumming_Animal]

I'm on 33bhp (only until August, counting down the days :D) and my aftermarket exhaust doesnt seem to make much difference to when I put the stock one on for the MOT. Just get it is what I say, there wont be much difference to power, you won't notice much/any change in performance. But you'll be letting that v-twin roar like it's supposed to. The noise is very much worth it. And also looks better without that huge tree trunk of a stock exhaust, which also weighs a ton compared to my aftermarket can. Advantages to be gained.