FMF Powercore 4 Slip-On Exhaust - 4-Stroke

FMF Powercore 4 Slip-On Exhaust - 4-Stroke
FMF Powercore 4 Slip-On Exhaust - 4-Stroke

$179.99 - $296.99
15% Off - Save up to $53.00

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  • Description
  • 63 Reviews
  • 151 Questions
  • Fitment
Description Item #FMF001B

When designing the PowerCore 4, FMF looked at their top of the line products to deliver race-inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durability all at a price that won't break the bank.

  • Overall increase in power and torque.
  • Durable stainless steel and aluminum construction.
  • Space Age internal packing material for maximum longevity.
  • Hi-Flo modular end cap.
  • Internal shape of core uses Hi-Flo technology.
  • Enhanced sonic evacuation provides for higher flow and increased power.
  • Includes removable (most models) spark arrestor.
  • Optional 96dB quiet insert available (sold separately).

Note: For closed course competition use ONLY. Not intended for street use.


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63 Reviews
4.9 out of 5 stars
5 Star   74 4 Star   9 3 Star   0 2 Star   0 1 Star   0
ROBBIE
Verified Purchaser
Yelm, WA, USA
Durability   Ease of Installation   Performance   Power   Style  
The best aftermarket pipe out there

I can not say enough good things about this pipe. It have me more power way better sound. Very easy to install and is totally awesome.

Homes
Chandler, AZ, USA
Durability   Ease of Installation   Performance   Power   Style  
Great Value

This product was as advertised. Easy install, looks and sounds great. Noticeable power increase. Fast delivery. I recommend it!

Liana
New Jersey, USA
Durability   Ease of Installation   Performance   Power   Style  
Powercore 4 on klx250s

This pipe is great! It made such a big difference in sound and power compared to the stock pipe on my klx250s. I love it.

PatDel
Verified Purchaser
Durability   Ease of Installation   Performance   Power   Style  
Powercore 4 on a kfx 450r

This pipe was simple to install, looks good and has a nice sound to it. It's not too loud and it gives a good look to the bike. I didn't notice much of a difference in power between the stock muffler though, but it is just a slip on. Would recommend to someone who wants a pipe that looks good and that is NOT too loud and at a decent price

FMF Powercore 4 Slip-On Exhaust - 4-Stroke
Rick
Verified Purchaser
Louisiana, USA
Durability   Ease of Installation   Performance   Power   Style  
Awesome performance and sound!

Bought this slipon for my daughters canam ds 90. The sound and performance exceeded my expectations on such a small atv. My daughter smiles from ear to ear every time she rides! Would definitely recommend this exhaust.

Voorhees
Verified Purchaser
Durability   Ease of Installation   Performance   Power   Style  
Louder is safer

Installed on a 2015 xt250 with k&n air and dynojet programmer. Louder than stock but not annoying. 10 min install. With all 3 items I can go 10mph faster with more responsive throttle. Arrived early. Gotta love MotoSport.

Davis18
Verified Purchaser
Augusta, GA, USA
Durability   Ease of Installation   Performance   Power   Style  
FMF Powercore 4 Slip-On Exhaust - 4-Stroke

Sounds great not to loud very easy to install on 150R

Buckrub
Verified Purchaser
Durability   Ease of Installation   Performance   Power   Style  
Great

Nice , easy slip on pipe

jjameson68
Austin, TX, USA
Durability   Ease of Installation   Performance   Power   Style  
For my '08 yz250f

Love this pipe! I folded my stock one in half on a crash and this one ads all the power I need. Coming out of corners is much smoother and keeping those high RPMs in whoops are great with this slip on. Easily ads a few noticeable HP. Took all of 2 minutes to install.

brmwvu919
Verified Purchaser
Durability   Ease of Installation   Performance   Power   Style  
Great Sound

The pipe has some gnarly sound and improved my bottom end acceleration. Will buy the header soon to complete the exhaust system on my '06 CRF450r

Bubba
Gray, GA, USA
Durability   Ease of Installation   Performance   Power   Style  
GREAT BUY

I put this on my 2015 TTR230 and couldn't be happier. Super easy installation. Gave the bike more power. Sounds great. This pipe is LOUD!

FMF Powercore 4 Slip-On Exhaust - 4-Stroke
Brmwvu919
Lebanon nj
Durability   Ease of Installation   Performance   Power   Style  
Crf450

Looks and sounds great what else can I say. Will buy the header very soon to complete the exhaust.

mikey
Verified Purchaser
Hemet, CA, USA
Durability   Ease of Installation   Performance   Power   Style  
Power pipe

I noticed the power right away, after I tuned my carb a half turn

Mitch
Fulton,
Durability   Ease of Installation   Performance   Power   Style  
FMF Powercore 4

Very easy installation . Quickest bolt on application to give a noticeable gain in torque and a smoother power curve to give it that low end pull. Can't go wrong with flying machine factory!

jessem
Paris, MO 65275, USA
Durability   Ease of Installation   Performance   Power   Style  
Sounds great

Sound great easy to put in gave me a little bit more power

Kells
Verified Purchaser
Murphysboro, IL 62966, USA
Durability   Ease of Installation   Performance   Power   Style  
Amazing Product

This slip on is awesome. Gave quite a bit more horsepower and torque in the higher rpms. Durable as well. I love it. When installing it, it didn't exactly "slip-on" but it went on pretty easy. Just had to wiggle it to get it to slide on. I got it because I was wanting to get something aftermarket like the exhaust, plus I was tired of looking at my ridiculously long stock exhaust. Glad I got it!

English
Fuquay Varina, NC, USA
Durability   Ease of Installation   Performance   Power   Style  
Sound

This dirt bike exhaust is just throaty as it can get and it comes with a installed spark arrestor so you can hit the trails with it, i have noticed some really big differences, it seems more responsive like it has the power to do anything, with that stock exhaust the crf has sounds like a baby with this monster on it its like a monster. its not to expensive either so it wont break your budget and its definitely worth the money too.

Shep450
Verified Purchaser
Ohio
Durability   Ease of Installation   Performance   Power   Style  
Suz 450

Awesome exhaust!! Easy to install and sounds great!!

russ
Verified Purchaser
Perry, KS 66073, USA
Durability   Ease of Installation   Performance   Power   Style  
More power to ya

made my 2008 wr250f sound and run like a dirt bike should had to change the main jet up to a 172 and a couple other small things but it runs a lot better than it did before.

Rider336
Verified Purchaser
PA
Durability   Ease of Installation   Performance   Power   Style  
Nice

Looks and sounds great.

1-20 of 63

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151 Questions
Answered:   150
Not Yet:   1
mike
Q: What size is the inlet on this exhaust?
3 days 16 hours ago
Ubbe
Q: Does it fit ?
1 month 8 days ago
Hey guys. I wonder if this exhaust will fit my Kawasaki KLX/dtracker 125 cc. Thanks for answer
MotoSportExpert
MotoSport Staff Expert
1 month 8 days ago
A: Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct exhaust for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Dave
Location: Ca
Q: Does it come with spark arrestor?
1 month 15 days ago
MotoSportExpert
Expert MotoSport Staff
1 month 15 days ago
A: The FMF Powercore 4 Slip-On Exhaust Includes a removable (most models) spark arrestor.
Shawn
Q: Is there a spark arrestor?
1 month 19 days ago
i was wondering if i have to purchase a different tip to be legal on the tails
Davis18
1 month 15 days ago
A: Yes, there is a spark arrestor.
Homes
1 month 14 days ago Location: Chandler AZ
A: This slip on exhaust comes with a USFS approved spark arrestor. You do not need to purchase one. Slip it on and hit the trials.
Jason
Q: Do I need to rejett for an 07 trx250ex, or need any other accessories?
2 months 23 days ago
MotoSportExpert
MotoSport Staff Expert
1 month 28 days ago
A: Normally when installing a slip-on only minor jetting changes are needed, if any at all. If your bike is currently jetted properly you will likely not have to make any changes after installing this slip-on. I would recommend installing the exhaust and riding the bike to see how it is running then tuning your carburetor from there if necessary.
Johnny
Q: Is this pipe exactly the same in the picture?
4 months 4 days ago
Is this pipe exactly the same in the picture if i'll purchase it for my 2015 Kawasaki KLX140L? Does it have a fmf header for my 2015 KLX140L?
MotoSportExpert
Expert MotoSport Staff
4 months 3 days ago
A: The image is a generic image supplied by the manufacturer for reference only. It may not be displaying the exact part for your bike. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct exhaust for your bike. This would be for the slip-on muffler only. Does not include the head pipe. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Sweet
Q: Will this slip on fit the stock header off of my 08 crf250r?
4 months 19 days ago
MotoSportExpert
MotoSport Staff Expert
4 months 19 days ago
A: Yes you shouldn't have any issues running the stock header.
herb
Location: West Grove, PA 19390, USA
Q: Will this work with a 125cc dirt bike that has a carburetor?
4 months 24 days ago
MotoSportExpert
Expert MotoSport Staff
4 months 24 days ago
A: Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct exhaust for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Sarah
Q: Will it fit on my 2013 Yamaha xt230?
Over 5 months ago
Will my bike involve any tuning after the exhaust is put on, or can I just put it on and not have to mess with any tuning?
MotoSportExpert
Expert MotoSport Staff
Over 5 months ago
A: Yes the FMF Powercore 4 Slip-On Exhaust Fits your 2013 Yamaha XT250. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct exhaust for your bike. Normally when installing a slip-on only minor jetting changes are needed, if any at all. If your bike is currently jetted properly you will likely not have to make any changes after installing this slip-on. I would recommend installing the exhaust and riding the bike to see how it is running then tuning your carburetor from there if necessary. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Corn66
Location: Valley Center CA.
Q: Will the FMF powerbomb header fit this exhaust?
Over 5 months ago
If I buy a FMF powerbomb header will it fit on my Kx 250f and will it fit on this exhaust
MotoSportExpert
MotoSport Staff Expert
Over 5 months ago
A: Yes. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct exhaust for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order. FMF headers, whether it be the PowerBomb or the MegaBomb, are fitted to match an FMF series muffler.
*We do not recommend or guarantee you try to match it to a stock muffler..
1-10 of 151

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