I'm thinking of buying an FMF Factory4 exhaust system to put on my R with the HRC kit. Is this a good combonation? Is anyone running one of these on their R? The factory4 system is in my price range, but if there is another exhaust system that will be better in the same price range, let me know.

 

I have an FMF Q2.
I ride the dunes in Oregon a few times a year so it has too meet 93db level.
I don't have the HRC kit but I have a Hotcam Stage II, Uni filter and HRC kit style cut airbox lid and rejetted the carb.
I really like the way the Uni filter and Q2 added to the power.

 

That is exactly the settup I have on mine. Very pleased with it. I am running the quiet core in the muffler, to keep the noise level down.

 

Thanks reconranger for the info. the only dunes we usually run are the St. Anthony dunes and as far as I know there are no noise ordinances there. Although I will be getting the spark arrestor endcap to make it legal to ride on us forest property.