400 help

[yellow05ex]

Im rather new to the sport atv, I have riden utility most of my life. I just got a 05 400 and would just like some opinions on what kind of mods to put. I have read lots of posts askin for similar help, however for this post please state why you believe I should use the certin exhaust, shocks, and cam....for example. Please make it a better reason then "cause I have it and love it". Legit info only please. But anyways, what I basically would like to do is exhaust and a cam. Post anything and remember give me real reasons and why I should want this and what my gains are going to be. Oh yeah I basically do trail riding. Thanks

[USAF Dirtboy]

I like the FMF powercore4, It has really good bottom end, and is really good for the trails. It is loud but i like the loudness.
Also get a K&N filter, it helps alot with any kind ofn pipe. Oh yeah bars those...stock bends really easy, and dont get moose becuz they bend just as bad...i suggest you get tg or renthals.

[yellow05ex]

Thanks for the advice, but how about a full system (pipe) that isnt really LOUD. I know pipes are loud but something within reason, I dont want the entire state of PA to know when I fire up my 400

[USAF Dirtboy]

Then try the FMF "Q" it is quiet but has just about the same performance

[enduro400rider]

HMF pipe very good quality good performance good looks comes in differant colors. its a little loud but your not going to find many good quiet pipes.

UNI filter filters better than K&N ALOT easier to clean flows as much or even more than K&N cheaper than K&N. i had both filters and i am much happier with my UNI

tires i would say Klaws front and back they get great traction and they have a reversible tread pattern. they last a long time they are durable, and cheap

Nerf bars are a must, they will save you if you land wrong mine have saved me from many broken ankles. i have AC nerf bars i like them they look pretty good too.

get a bumper cuz the stock one sucks. look around find one you like they are all better than stock.

for your motor i would stay at the stock bore but get a High compression wiseco piston and a hot cam stage 1. it will increase your power by alot. and still be reliable

[yellow05ex]

What is the option for jetting when getting the HMF pipe? I mean why would I want to pay or wouldnt want to pay the extra $7? Also, what ration piston 11:1?