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Hey i was wondering if anyone has tried either of these exhausts on their bikes, i was going to get the full x3 system or get the xcr and buy a header, if anyone has one of these could you please tell me if it gave good power, also what would be the advantage to getting the twin air filter power flo kit with the sealing ring vs without the sealing ring, i'm for sure going to get the jd jet kit and leak jet kit, but what about the power surge? should i just do the redbeard mod or would the power surge be better? srry for all the questions i just like to kno what i'm getting myself into when i buy things i'm only 15 and gettin my own job this summer and am looking forward to the extra cash

-thanks very much
jason

Hey bud. Why don't we start by finding out a couple things:

-What so far have you done to the bike? (Is it stock still)?

-What is it about the bike you are looking to change?
For example, if it's more power you are after, I wouldn't start with an exhaust system. You would do much better to perform the airbox mod, then rejet, then possibly add an aftermarket cam and air filter. The total cost of these changes combined would still be less than an entire exhaust system, and likely give you better results as well.

So tell us what you're after, and do your best to resist just wanting a better "sounding" bike. Yes, the exhausts will do that for you, but if mo' power is what you seek, we can steer you toward that result a little more efficiently. There is a pecking order you can go thru to get more out of your bike, and while an exhaust will help, there are other things that will help more, first.
-matt

so far all i have done to the bike is put the quick shot accelerator pump on it, and a hi flo water pump from boyosen to keep it from overheating. i'm definetly in the market for power, so i was going to do the jd jet kit for sure, and was looking at the power surge kit as well as the leak jet kit, i'm also definetly going to get the twin air power filter kit, and if i can convince my dad to let me i was going to go ahead and do the air box mod, the reason i wanted an exhauset is one it sounds amazing, and it would let the bike breathe way more after the twin air filter, you can't let air in without letting it back out again. i don't know if i want to do a cam if i did i'd want the stage 1 for the low end. i'm mostly trails and i dont really need the top end boost. not to mention i don't know if i have the proper tools to get the cam out of the bike or if my dad would even consider it, i'm 15, but can work my way around a motor alright i've helped to rebuild a ford v8 with little problems, but the thought of gutting my bike without a torque wrench and then have to stitch her back up again isn't really all that great to me.

Hmmm... couple thoughts...

1) Never under-estimate your abilities based on your age. Who says you have to be 30 to be able to swap out a cam in your bike (if that's something you want to do).

2) Keeping #1 in mind, don't under-estimate doing a job properly (the counter-part to #1, I know... but you're right, you do need to study and feel confident about something like that before you tackle it). Incidentally though, if you ever plan to adjust your valve clearances yourself (meaning: NOT having a dealership do it), removing and replacing the cam is actually a part of it! It's no biggie. And if you have to remove the cam to adjust your valve clearances, it's just as easy to put a different one back in!

Maybe an order you can follow, which (aside from changing the cam) will help get you some more power.

1) DO perform the airbox mod. Free. Easy. Effective. You do not have to pull the airbox to do this. You can remove the snorkel by drilling out the rivets that hold it onto the box, then carefully cut the top of the box, following the slightly raised line around the edge.
2) Definately: remove the backfire screen from the air filter frame. I think it's held on with tabs, and can be easily separated.
This will help the carb pull more air in (which you would want, since the cutting of the top of the box. These 2 changes would go hand in hand here).
3) Ditch the stock air filter. Replace it with the TwinAir, because it is back-fire resistant (which is good, noting you'd be removing the backfire screen!).
4) DO get the JD jetting kit. I don't think the leak jet needs quite as much playing with as the main jetting setup. You WILL NOT be disappointed in the results of the kit, so long as you follow his instructions to the T. You already have the quickshot A/P cover - do this piece justice by jetting your bike properly to go with it, (after your airbox changes).
5) Remove the baffle from your stock pipe. It's mounted to inside of the end-cap of your muffler, and is not necessarily easy to separate, but you will get increased "breathe" from your bike.
6) If you like this setup, you can go with an aftermarket slip-on muffler, like the White Brothers E2, or FMF, etc. I have heard many praises about the stock head-pipe giving the best performance with most of the slip-on mufflers out there, and I still use the stock head pipe myself. Only other one I'd consider is the FMF powerbomb, because it looks like they've done something different (out of the box thinking). Most after-market mufflers will give you some type of improvement over the stock. But if that's not in the budget just yet, try your altered stock muffler (above) until you can afford your new muffler. I can't guarante you'll make any friends next door (it will be LOUD), but if loud is what you want, well then you'd have it.

yah i looked at the owners manual after i replied and the removal of the camshaft is much simpler than i thought but the only thought i would have is i don't have a torque wrench but this is a good a time as any to get one. thanks i'll talk to my dad and try to get him to let me do all that stuff, you wouldn't happen to know if the exhaust is louder than 96 db without the baffle i can't remember.

thanks

Not exactly sure how loud a non-baffled 250X is, but in case that might be a problem for where you ride (are they maybe spot-checking people with a sound meter?) you could take it with you, and some simple tools to re-attach it, just in case it is.
Another alternative to pulling the baffle altogether is drilling a hole in it, and putting it back in.

There is a fellow by the name of Rick Ramsey who has done some pioneering work on his 250X, since owning it in '04. He's posted pretty much everything he's done on his site.

Here: give this a shot. Good reading, and he really makes sense of what the mods have helped do for the ride.
http://www.rickramsey.net/CRF250Xmymods.htm

Here is another good source for 250X mods, from Dirt Rider magazine:
http://www.dirtrider.com/tests/offroad/141_0409_crf250x_hop/

Those 2 should keep you busy with hours of reading and choosing. Try to set your sites on the changes that will help you become a better rider, as well as give you some of the added power you are after. Definately so many things you could do, but ultimately you will have to pick the order.

Good luck duder.
-matt

I have the Leo Vince Slip-on on my 05 250X it kicks a**. I can just pull up a wheelie anywhere and anytime I want. And I know it's not a strength difference because I am only 14. I can also burn off whenever I want. I don't have a header and my bike is WAY faster. I guess what I am saying is get the Leo Vince pipe.

P.S. Make sure your bike is jetting before installing the pipe.

i figured that would be the better of the two thanks you guys now i'm pretty sure of what i'm going to do, but first i have to do the hardest part... get the money.

thanks again

jabbott233686 wrote:i figured that would be the better of the two thanks you guys now i'm pretty sure of what i'm going to do, but first i have to do the hardest part... get the money.

thanks again

Does your town have a blood plasma center???

They usually pay $ 35 a pint.

You gotta have a few pints in you that you aren't using...

haha yah lol if only if only i was 18 i could go give blood till i passed out. i'm getting a job here in a little while so i'll be set by mid summer. i like to get an idea of what i want ahead of time so i'm not dissapointed with what i buy, thats how my dad is too, so if i want to buy anything i better be set on it for a few months. lol

-jason

Hello, to Monkewrench I also have a 2004 250x, and is still stock, What will happen If I perform the airbox mod as you described and remove the backfire screen, but do not get the Jd jettings or rejet? Will there be a diffrence in the stock bike? I already removed the spark arrestor and added a Twin air Filter.
Thanks.

aleaayala wrote:Hello, to Monkewrench I also have a 2004 250x, and is still stock, What will happen If I perform the airbox mod as you described and remove the backfire screen, but do not get the Jd jettings or rejet? Will there be a diffrence in the stock bike? I already removed the spark arrestor and added a Twin air Filter.
Thanks.

Hello. No, don't do that. You will notice a difference... but not the kind you'd like.

To answer your question this way: a simple rule of thumb -- your budget doesn't matter here -- tight budget or pocket full of change: If you plan to increase incoming air by performing a mod, or do something to help the bike exhale more freely (any exhaust mods), do not waste your time on the mod if you aren't prepared to also work on your jetting right afterward. You are actually going to make the bike run worse, and even leaner, which is not healthy for the engine or fun for you!

Or still another way to put it:
-Adding more air without more fuel equals less performance.
-Adding more fuel without adding more air (on a stock 250X) is probably what you need to do anyway. They are jetted too lean brand new.

Downright best investment for ANY 250X owner: JD Jetting kit. Grab one of those first, then begin your mods. 2 good things will come of it: for one, you will have a renouned kit where the jets are just secondary; the information he gives you is what's key. And second, you will have several jets to support whatever stage of modification you're at.

Good luck. Be prepared for some work, but it is worth the efforts. Wait till you see the bike for what it really can be!

Thanks youve been very helpfull!! And when I buy the Jd all instructions and steps for changing the jetting are included and simple? Cus Ive never done that before, eitherway Im probably order the kit this week.
Thank You.

There are instructions, yes, but to guide you through the mods... not teach you how to access the jets. For that you're going to need the service manual. Maybe even the owners manual at the least, since I think it covers carb removal and disassembly.

steps for changing the jetting are included and simple?

Hmmm... "Simple" is a relative word. Jetting the carb isn't impossible, but on the first attempt I'm not sure I would call that late-night rejetting my X in the living room 'simple'... Just 'late'.