I would suggest an FMF megamax exhaust instead of the white brothers. The FMF is about the same and comes with a headpipe as well, all for about 30 bucks less than just the white bros silencer.
I had a DG when I got my 300ex and when I put the FMF on it, it was a whole new world. It has way more power than the DG did.
Whatever you do, get something with both the header and the silencer because a silencer alone wont do much.

 

Yea, I will definatley just get a pipe and do air box mods. But, I really think the white bros is a better pipe. And i dont think the FMF megamax II comes with a head pipe. I've seen the FMF power bomb headers, but thats only for the 400EX. I dont wanna DG, they dont look so cool and i havent heard too much good stuff about them. I already have the Pro Design Pro Flow kit on my airbox. So, whoever said the FMF came with a header is wrong, maybe it comes with one for a 300EX, but not a Warrior. Thanx for any replies

 

450 duration....WOW!!!...must have really good vacuum
Sorry couldnt resist..

 

Thats Ok ,Your right though, With my drilled air box and k,n with that cam ,you can hear air getting sucked in when you give her throttel,Its pretty cool.The only thing I need is that alba adjustable cam gear because the cam threw the timing a littel off and now it sputters slightly at constent throttel ,but durring acceleration its fine,But wow ,this things got a awsome topend now.

 

Sorry, I guess your not a mechanic...You just talk like your one...
There is no such thing as a 450 deg. duration cam.
That would be the lift (.450") lift
Which is rather excessive on that engine I might add...
Remember no advise is better than bad advise...
Just a thought...

 

hey I never claimed to be a mechanic,I'm just a average guy that learned a few things from experiences and friends of mine how are mechanics.So if I got one thing wrong in my post ,like duration insted of lift ,I would expect to be corrected insted of being judged and condemd for my mechanicel ability.So I apoligize if my atempt to help somone is taken as me trying to mislead anyone.

 

i have a built 98 warrior. it realy dosent take many mods to get it to run with the 400. there are a couple of exaust systems that come with head pipes that work well. i am useing a dg head pipe with a supertrapp ids silencer. also a tork stuffer works realy well. after you do the rejet the carb with a 147.5 main and raise the neddle one slot.good tires are a must I have found the bandit xc's on the front work best and then any of the othe tires work well. i change between a 20 razor and 22 inch bandits depending on the track. i have ither motor work done plus a some shocks which are a great investment. it may seem like a lot but it a great feeling to be able to chase down,pass,and walk away for 400's any may other "better"bikes. no one in my class dares to say any thing about warriors being slow. because i've passed them all.