ok, my bike is stock. I would like to get a slip-on pipe on the 200 range. this is what i am considering:
A HMF slip-on
A fmf powercore
A Bills Thunder
supertrapp ids 2

What pipe would be best power increase? I don't care about noise, because they can't catch me anyway. I know the Hmf is good, i have one on a warrior, but I have never tried any other brands. what i am looking for is just POWER INCREASE, i don't care about sound, ect.

What pipe will give my raptor the most hp? also any suggestions on other piupes would be great too. thanks

 

All I will tell you is what I know from exp. The FMF I have gives no top end gain that I could tell. It does however give it to the bottom. I have heard good things about the Bill's but have never seen one.

 

I would consider the Pro Circuit T-4 slip-on as well, it is 199 most places and should make as much or more power then any of those, good trottle responce as well. Just my opionion!

 

Try the White Bros. E-Series slip on good gains from top to bottom + its tunable.

 

I have the Bill's Pipe and it flat out rocks!! I've also had a Big Gun and a CT Sonic, And the Bill's Pipe gave me the best numbers on the dyno for my style of riding (sand drags). It added tons of low end torque.[img]i/expressions/face-icon-small-cool.gif[/img]

 

My brother-inlaw has the WB R-4 exhaust and its great. improved his power a lot! he just needs to get rejetted.

 

so far, i seem to be swayed twords the bills's pipe!

 

I vote for the gyrt slip-on. Although i like my buddies T-4, and i have heard good things about Bills pipe. Did i mention that some have sucess with FMF,HMF and KFC. Anyway i vote to stay away from the disc, and go by looks. The only drawback to the gyrt is the mounting system. I would rather have welded tabs over the clamp system. Good luck. Most pipes are good.

 

If you are looking just for the slip on, my vote is for the GYT-R Carbon slip on. Looks trick and really puts out. Make sure you get a filter kit, and jet up. My friends is 165/170 and he is the closest competition.....

RM

 

How loud is the bill's?