Do you need to rejet if you install a K&N or UNI filter on a 2011 500 HO Sportsman

 

Not normally(at least not down here),just don't forget to keep em maintained whichever one you pick! Just my Uni filters
Ps... may run a little leaner when cold weather hits or in high altitude,but you should be able to tell. If so then a simple carb needle raise or bump up on the main jet one size. OPT

 

Should be fine, I ran mine around the yard with no air filter at all and the machine behaved ok.

 

Thanks for the info guys much appreciated.