HMF Swamper XL Slip on Exhaust

I’m new to the site and not sure if I’m asking this question in the right area of the forum. I’m looking at buying a HMF slip on exhaust for my 2011 sportsman 500. Is it a good exhaust to have and do I need to do any jetting ? Also I already have a K&N air filter in the bike if that has anything to do with the exhaust.

Thanks