Hey guys,
I'm new to this forum but no where new to riding. I've had my '02 250EX for just over a year. Great little machine. I just mounted some new tires and have a craving for more power. I've done some searching around on here and noticed the most common things were pipe, air filter and jet kit. So I started looking around online and came across what I think to be a good site, www.mods3.com. So I started searching and i came across the options they have for the 250EX. I found what they call "Evo X Big Gun Power Kit." It comes with a complete Big Gun Evo X system, K&N Air Filter, Jet Kit and a Rev Box. Link....

Evo X Big Gun Power Kit

Here are some of the questions that I have come up with...
Either I've never hit the rev limiter on my quad or it doesn't have one, which is it?
Will this kit work with ALL the 250EX models? (May need to contact them about this question.)

Let me know what you guys think, I really appreciate it! Thanks in advance!

 

thats kinda of alot.........get a curtis sparks full pipe $399

forget the filter its a waste and call amr racing for there revbox its only $59

all you need are a couple of jets from the dealer $6.....and a shim for the needle valve

 

My experience is that a K&N will pass dirt! I suggest a UNI foam air filter, vent the airbox lid with some of those UNI round vents, an FMF PowerCore 4 muffler, and a rejet.

 

<div class="FTQUOTE"><begin quote>Originally posted by: reconranger

My experience is that a K&N will pass dirt! I suggest a UNI foam air filter, vent the airbox lid with some of those UNI round vents, an FMF PowerCore 4 muffler, and a rejet.</end quote></div>

That's what I've heard also. I guess I'll just buy it all separate then.

<div class="FTQUOTE"><begin quote>Originally posted by: jrafter

thats kinda of alot.........get a curtis sparks full pipe $399



forget the filter its a waste and call amr racing for there revbox its only $59



all you need are a couple of jets from the dealer $6.....and a shim for the needle valve</end quote></div>

How does the Curtis Sparks pipe relate to the Big Gun? Does my machine even have a rev box? And i never thought about just getting jets from the dealer, good idea!

 

biggun pipes are ok.....but custis sparks is the ****

http://s262.photobucket.com/al...1/moondog8u/?start=40


theres a pic of my kids on there

you also have a revbox ...look under the left fender and you should see it

the rev limit is so low on the 250ex it will help a lot

and as far as airfilters its up to you.....uni and k&n are both good filters but the stock is also a good filter

 

The trouble with the stock air filter is that you are stuck with that restrictive metal wire insert. The UNI has its own plastic cage that isn't restrictive, plus you can get air through the end of the filter as well. It passes more air than the stocker, yet has a margin of safety that a K&N doesn't have.

 

unless your racing with the pros .........and 99% of atvs riders dont.........who cares..........but its only money

 

<div class="FTQUOTE"><begin quote>Originally posted by: jrafter

biggun pipes are ok.....but custis sparks is the ****



<a target=_blank class=ftalternatingbarlinklarge href="http://s262.photobucket.com/albums/ii111/moondog8u/?start=40
">http://s262.photobucket.com/al...dog8u/?start=40
</a>


theres a pic of my kids on there



you also have a revbox ...look under the left fender and you should see it



the rev limit is so low on the 250ex it will help a lot



and as far as airfilters its up to you.....uni and k&n are both good filters but the stock is also a good filter</end quote></div>

I'll look into the Curtis Sparks pipe. I'm almost posative I don't have a rev box but I'll look when i get home. I've reved my quad pretty high and never heard it cut out.


<div class="FTQUOTE"><begin quote>Originally posted by: reconranger

The trouble with the stock air filter is that you are stuck with that restrictive metal wire insert. The UNI has its own plastic cage that isn't restrictive, plus you can get air through the end of the filter as well. It passes more air than the stocker, yet has a margin of safety that a K&N doesn't have.</end quote></div>

I was talking with he local dealer and he said the same thing. He's seen K&N let in large amounts of dirt. He suggest to go with the UNI.



And just to clerify, I have 2002 250EX. I now around 2006-2007 they changed the 250EX.

 

a revbox is the same as a cdi box and you have to have one to run.........did you buy new or used because someone might have already added it

and a uni is cheaper than k&n

 

I know the quad is stock. I've done the only upgrade, tires. I'll look when I get home.