stock pipe mod for 220

[chicoman]

Hi, has anyone gutted theit stock pipe on a kdx220?
I was wondering how much (if any) power is gained compared to stock? and how much louder is it?

Thanks.

 

[radonc73]

Pipe or silencer?

 

[chicoman]

pipe

 

[radonc73]

The pipe has nothing that you can gut. It is what it is. Heavy.

 

[chicoman]

According to another thread from harryhuia (stock silencer mod) there is, he even included pictures. His bike was a 95 kdx 200 but I think they're the same pipe.

 

[ridejunky]

Do a search, there is alot on the subject of how to gut and performance gains

 

[chicoman]

I've done a search and I know how to do it but I'm looking for more opinions. I've only found a few threads from people who've tried it on a 220 and no ones mentioned how much louder it is or how it compares back to back with an fmf rev. (obviously the fmf will be faster but how much?)

 

[ridejunky]

Will this help? I cant comment because I haven't ridden or heard one thats been modified like that. Seems like alot of work compared to buying and bolting though.
http://www.dirtrider.net/justkdx/pipe.html

 

[radonc73]

I had never heard of gutting your pipe either. I would just buy a PC or FMF pipe it is a simple mod and you will always have an extra pipe, trust me that is a good thing my younger brother got in a head-on with a 4 wheeler on a camping trip within the first day we were done. I thought you were talking about gutting your stock silencer that thing is an anchor if you haven't try changing that it will save you a boatload of weight. If you ride in USFS land make sure to get a spark arrester.

 

[John Harris]

I ride a gutted pipe. Did the gutting myself and had it welded back together. Not quite as good as FMF woods, but close, and you probably do not need a pipe guard for it. It is a very dirty job to gut it, but if you have the time and are short on funds do it. Makes the motorcycle just a little louder than stock as most of the silencing comes from the muffler/spark arrester. I still use the stock muffler--not the best choice but it is paid for and as for the weight, if I were worried about that, I could lose a few pounds myself. Ride safe Cheers John

 

[chicoman]

Thanks for all the input, it's much appreciated.
I didn't want to buy an fmf pipe because:
1) The stock pipe should be quieter even after it's been gutted because the steel is thicker.
2) The stock pipe is much more durable.
3) The FMF costs $300 (can) and I was able to puck up a mint stocker (to be used as a backup or for resale) off **** for $12.50 US
4) If I wanted a race bike I would've bought a ktm. I bought a KDX because I wanted a cheap, quiet and reliable playbike that was still fun to ride.
I just didn't count on getting bored with the anemic top end so quickly. I really want to keep it as quiet as possible, Maby I should try the stock pipe with the RB mod and some reeds. It seems that most people change the pipe first though.