[Goose500]

do you have to rejet the carb with only a hmf utility pipe. on a 06 500 foreman. thanx

 

[bigmike]

yes

 

[Railroader]

It would be best if you did.

 

[muddin500]

i had to on the 500 but just taking out the spark arrestor on my stock exhaust i did nothing. hopes this helps!