So this weekend i put a Akrapovic link pipe on my 09 zx10r. it already had a vance and hines cs one slip on and the link pipe fit perfectly with it. The sound of the bike is almost ridiculous. my friend said that its one of the best sounding bike he has heard and thats coming from someone who has a gsxr 1000. also it dosent bog down so much now in the lower rpms with it but if anyone is thinking about getting one u definaly should in my opinion. there is pics up in the gallery if anyone is interested.