is this a decent exhaust for a 03 400ex? i dont see much info about it.

HMF Sport Exhaust Pipe Muffler Honda TRX 400EX Yellow:eBay Motors (item 380065842990 end time Jan-12-10 14:52:52 PST)



would this air filter be ok to replace the k&n?

ATV Parts & Quad Parts - Performance ATV & Aftermarket Quad Parts

 

For the same price with 20% off right now from FMF you can get a power core 4 That is a bad *** pipe

 

I would recommend an FMF PowerBomb Header and Q4 muffler if you want to keep quiet. PowerCore 4 is great, but will be louder.

Good idea to ditch the K&N...they pass dirt!!! The ProDesign (ProFlow) foam filter kit in the link is what I run, and I very highly recommend it! Also, look into a EHS Racing airbox lid with Outerwears.

You will of course need to rejet after making any changes!!!

 

Thanks guys, i just keep having carb issues and dont have anything else to blame it on besides the k&n. I am not to worried about noise.

 

ive got a hmf yea its loud...but it sounds good gives good power