go with hpd..thats what I have on my scrammy...sounds good and helps out a lot with the low end....don't have anything bad to say about the hpd

 

I've got a Supertrapp on mine and like it....I was going for the ProCircuit pipe but didn't want to spend $400, I got the Supertrapp in the bargain bin at my local dealer.

Sounds good and gives it good low and mid, haven't had a chance to open it up a lot.....I still need a clutch kit but I can easily pull wheelies on hardpack.

 

I have no complaints about HPD's powermaxx, it works very well on my 03 scrambler.

 

i am impressed with mine and others are impressed with theirs so its really a matter of brands becuz thay all seem to work better than stock,i workin on getting a clutch kit,which is the best(does fmf make em'?)

 

FMF does NOT make a clutch kit. I have no complaints with my HPD Aggressive clutch kit. Was worth every penny

 

I am going to go with the Aaen slip on.I have had great luck with their products and suport on my 400 2stroke Sportsman.