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2009 Honda CRF250X

FMF Powercore 4 Slip-On Exhaust - 4-Stroke

FMF Powercore 4 Slip-On Exhaust - 4-Stroke - Main
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FMF Powercore 4 Slip-On Exhaust - 4-Stroke - Main
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Retail: $299.99
$279.99
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FITS: 2009 Honda CRF250X change
 
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Product Description

  • Decades of racing development went into the design of the FMF Powercore 4 to improve the power and performance of your dirt bike or ATV at a practical price.
  • The FMF Powercore 4 is a muffler that will boost power and torque throughout the power range, making the Powercore 4 usable for all types of riding.
  • FMF designed a Hi-Flo end cap and core for the Powercore 4 to increase power by creating a free flowing end cap and a core that allows room for exhaust pulse. This results in a consistent power curve.
  • The FMF Powercore 4 uses and advanced cross-weave packing that is more durable then the traditional packing. The cross-weave packing also keeps the Powercore 4 at a reasonable sound level by dissipating the exhaust sound.
  • FMF constructed the Powercore 4 using aluminum to keep the weight down with stainless steel components for extended durability.
  • The FMF Powercore 4 includes a USFS approved spark arrestor.

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(18)
4.9 out of 5 stars
5 star   16
4 star   2
3 star 0
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Write a Review
“ love fmf products and this one didnt let me down power is up thru the whole rpm range with a little m... ”
450dirtscoot Location: Spokane, WA, USA
“ Great pipe. ”
Tdiehl717 Location: Salinas
“ I bought this on Tuesday night. ”
BTHOMASON Location: Mccalla, AL
1-10 of 18
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Verified Purchaser
Location: Wolfforth, TX, USA
Worth every penny!
My CRF 450 seemed a little choked up,so I ordered the Powercore muffler, was bolting it on within a few days, and BAM!!! what a difference, didn't even have to re-jet. E-Z!
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Top 50 Contributor Top 250 Contributor
Location: Crowley, LA, USA
Fmf exhaust
I love the fmf exhaust. It looks great and performs well.
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Top 100 Contributor
Location: Spokane, WA, USA
Power core 4
love fmf products and this one didnt let me down power is up thru the whole rpm range with a little more top than stock great pipe.
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Nicee BUY
This is way more exhaust then i thought very deep sound made my raptor 350 sound like a beast u can feel the extra power also
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Location: danville, ar
Fmf
Just put this on my 05 crf250x yesterday and I must say there is a considerable amount of difference in hp. As always motosport had it to my door in just 2 days, I have ordered quite a bit from this site and never been disappointed I will be back for sure. Along with the megabomb header this pipe is the only way to go without digging a hole in your wallet. Thanks guys from motosport.
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Location: Salinas
Great Pipe!
Great pipe. I am far from a mechanic and it was really easy to install and sounds great! Great Buy!!
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Verified Purchaser
Location: Cle elum , wa
Great slip on option
Had this installed in 10 minutes, 3 inches shorter than stock and still sounds great....with a sparky , added power and looks great!
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Location: Mccalla, AL
Motosport service!
I bought this on Tuesday night. And got it the next day!! Motorsport is by far the best web site to buy from! As in the fmf! I bought this and the power bomb header for my 2005 RMZ 450! Was easy to put on sounded great added power! And looks amazing! Only thing I still need to do is get it re jetted! Great product!
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Location: NY
Awesome exhaust!! N
Just bought this exhaust for my 04 rmz 250! BIG power difference! Looks And sounds awesome! Definitely happy with it 100%
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The Powercore standing proud on my YZ250F
Location: WA, Australia
Remains first choice for exhausts and mufflers
In my earlier 2 smoker riding years, FMF was the brand of choice... happy to say years on (and a change to 4 stroke), that I am still impressed with their products. As earlier reviewers have claimed, their slip-on is easy to install and (when compared to stock) has a noticeable increase in the lower RPMs. It's fairly meaty sounding, although I would be surprised if it broke the 9x decibel upper limit (yet to check). Can't praise the Powercore 4 enough and have already recommended it to a good friend as my product of choice.
1-10 of 18
Total Questions (18)
Questions with answers:
  18
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Have a question?
“ Does this exhaust include packing?... ”
Tyler
“ Will my stock header work with this exhaust?... ”
RideRed Location: Huntington Beach, CA, USA
“ What carb jets should i install in carb, 2003 yamaha TTR225 ?... ”
mick Location: Cheyenne, WY, USA
1-10 of 18
Tyler 4 days 6 hours ago Location: pittsburgh
What is the db's for this pipe on a 2007 KTM 250 sxf?
Top 100 Contributor
4 days 3 hours ago Location: Spokane, WA, USA
i think its 98-99 db with the s/a tip in and 100 db w/o.
Answer this Question
dodge 20 days ago Location: United Kingdom
Honda xr250l baja 1995?
hi im from uk and im after a new exhaust fot the above bike, current exhaust still on the bike is original, will this exhasut fit this bike? if not do you recommend one that will? thank you.
17 days ago Location: Wolfforth, TX, USA
As long as you select the right info on the application i.e. make, tear, and model, you should be fine.
MotoSport Staff
5 days 12 hours ago Location: Portland, OR, USA
Your 1995 XR250 baja looks like it was the same as the 1996 XR250R sold in the US. Unfortunately I do not have specifications for European models so you may want to call FMF directly to see if they can confirm what will fit your bike exactly.
Answer this Question
Tyler 23 days ago
Does this exhaust include packing?
MotoSport Staff
23 days ago Location: Portland, OR, USA
Yes, this silencer comes pre-packed and ready to bolt on.
Top 100 Contributor
23 days ago Location: Spokane, WA, USA
yep it is ready to bolt on.
Answer this Question
RideRed 29 days ago Location: Huntington Beach, CA, USA
Will my stock header work with this exhaust?
I have an 08' CRF 450X and was wondering if my stock header is compatable with the Powercore 4 exhaust?
Top 50 Contributor Top 250 Contributor
28 days ago Location: Crowley, LA, USA
Yes it does and still performs well.
Top 100 Contributor
28 days ago Location: Spokane, WA, USA
yep if they make a can for your bike the stock or fmf header will fit
MotoSport Staff
25 days ago Location: Portland, OR, USA
Yes this item is designed to fit perfectly on the stock header of your 2008 CRF450X. Keep in mind jetting may be required to achieve a properly running bike. Just make sure to profile your bike correctly if you decide to order, to make you receive the correct exhaust for your model.
Answer this Question
Joshua 1 month 1 day ago
What carb jet should I use on a 2009 Honda TRX250X?
MotoSport Staff
1 month ago Location: Portland, OR, USA
After checking with FMF directly, it is suggested that you run the stock jetting for this Slip-On (for the 2009 TRX250X) if you are running anywhere from sea level to 1500 feet.
Answer this Question
Russ 1 month 4 days ago Location: Ohio
I have an 07 Honda CRF250R, will this fit the 4.1 Titanium megabomb header? So can I save some money from buying the 4.1 can and mid-pipe?
2007 Honda CRF250R FMF 4.1 Megabomb Header fit FMF power core 4 slip-on?
MotoSport Staff
29 days ago Location: Portland, OR, USA
Yes this slip on will work with FMF's Titanium Megabomb header for your 2007 CRF250
Answer this Question
mick 1 month 10 days ago Location: Cheyenne, WY, USA
What carb jets should i install in carb, 2003 yamaha TTR225 ?
live at 6065 ft. elevation, cheyenne, wyoming. installing FMF powercore4 slip-on, onto stock exhaust pipe. thank you, mick
MotoSport Staff
1 month 1 day ago Location: Portland, OR, USA
FMF is recommending you start with the stock jetting. There are too many factors that play into jetting a bike such as elevation, temperature and humidity to give an exact answer. Based upon your elevation, the jetting will end up leaner than what is stock from Yamaha so that is the direction I would go.
Answer this Question
motorider43 1 month 13 days ago Location: Sacramento, CA, USA
I live in northern California will it pass sound testing?
MotoSport Staff
1 month 9 days ago Location: Portland, OR, USA
This would depend on your local riding area or track's sound requirements as well as the application. Typically you will not have any issues with this exhaust.
Answer this Question
Pscott 1 month 18 days ago
Does this impact my mpg on 2012klx250s. I have not jet yet either. Is that an issue?
MotoSport Staff
1 month 16 days ago Location: Portland, OR, USA
With some rejetting and this exhaust there may be a minimal difference in mpg, but not enough to raise any concern.
Top 100 Contributor
1 month 2 days ago Location: Spokane, WA, USA
shouldnt effect mpg much at all just changes the way the bikes power is put to the ground.
Answer this Question
zach 1 month 24 days ago
Will this make my bike more powerful and faster?
if i got this with the FMF Powerbomb Header - Stainless Steel would my 07 yz250f be more powerful and faster?
MotoSport Staff
1 month 21 days ago Location: Portland, OR, USA
Yes, this will change the power output of your YZ250F. You can expect the bike to rev faster and higher without it falling off as quick on the top end. When you change the exhaust on this bike, you will want to make sure that you adjust the jetting accordingly to get the most out of this upgrade.
Top 100 Contributor
1 month 2 days ago Location: Spokane, WA, USA
pipes just change how the bike makes power and where in the rpm range. i have the same system on my 09 450 and it makes the power come on harder and pull further in the rpm range but it gave up a little off the bottom to get it. hope it helps
Answer this Question
1-10 of 18

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