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 See Also: 66 Reviews 162 Questions Fitment
Item #FMF001B

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66 Reviews
4.9 out of 5 stars
5 Star   77 4 Star   9 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Shane Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Awesome

I got this on recommendation from a friend who got the same one last year for his track bike. Mine is a WR250F install was a breeze and it sounds great always love FMF.

Brad MotoSport Staff Expert
Portland, OR, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Just what I needed

This exhaust really woke up my bike. paired it with the powerbomb headed and the difference is night and day.

ROBBIE Verified Purchaser
Yelm, WA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
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 Top 1000 Contributor
Chandler, AZ, USA
Durability 4/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 4/5
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 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
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 5/5 Ease of Installation 5/5 Performance 5/5 Power 3/5 Style 5/5
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 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
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 Top 1000 Contributor Verified Purchaser
Durability 4/5 Ease of Installation 5/5 Performance 4/5 Power 4/5 Style 4/5
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 4/5 Ease of Installation 5/5 Performance 5/5 Power 4/5 Style 4/5
FMF Powercore 4 Slip-On Exhaust - 4-Stroke

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

Buckrub Verified Purchaser
Durability 4/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 4/5
Great

Nice , easy slip on pipe

jjameson68
Austin, TX, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
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 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
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 4/5 Ease of Installation 5/5 Performance 5/5 Power 4/5 Style 4/5
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 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
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 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Power pipe

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

Mitch
Fulton,
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
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 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Sounds great

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

Kells Verified Purchaser
Murphysboro, IL 62966, USA
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 4/5
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 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
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 4/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 4/5
Suz 450

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

See 20 More Reviews
162 Questions
Answered:   159
Not Yet:   3
Boob
Q: Do I have to re jet the carb or anything else?
3 days 14 hours ago
trich
Location: Maryland
Q: Will this fit fine on my 2007 crf150r? do i need extra mounts or screws?
5 days 17 hours ago
MotoSportExpert
MotoSport Staff Expert
4 days 11 hours 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 muffler for your bike. Uses stock hardware. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
52000btuss
Location: Kentucky
Q: Header for power core 4?
7 days 22 hours ago
Wanting to know if the slip on exhaust works with the fmf power bomb header or do I have to get a different fmf brand
Rider1211
Q: Will This fit my bike?
8 days 10 hours ago
I have a 2006 crf150f and since this is a slip on exhaust not s full exhaust system does it connect to the original exhaust pipe or do I have to get a whole new system? My question may sound confusing or maybe stupid but it's a serious question and if someone could answer that would be great
Tony
Location: Canada
Q: Did i need to do any modification on my engine. I have a suzuki drz 125 L year 2015?
21 days ago
MotoSportExpert
Expert MotoSport Staff
18 days ago
A: No modification to the engine would be needed. Rejetting of the carburetor may jetting may be needed. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Blake
Q: Will this exact exhuast fit a 2005 honda crf450r?
2 months 21 days ago
MotoSportExpert
MotoSport Staff Expert
2 months 20 days 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. (The image is a generic image supplied by the manufacturer for reference only. It may not be displaying the exact muffler for your bike).
Brewtrue
Q: When will there be more in stock?
2 months 21 days ago
MotoSportExpert
Expert MotoSport Staff
2 months 20 days ago
A: Please call one of our sales professionals to inquire about availability.
Dirt Bike / ATV: 1-888-676-8853
Mase
Location: New Jer
Q: I have a 2001 YZ250F and want to know what header pipe I should be using with this exhaust.?
3 months 1 day ago
MotoSportExpert
MotoSport Staff Expert
3 months 1 day ago
A: The FMF slip on is designed to fit either and FMF or stock header.
RMZ450
Q: Will this fit a 06 RMZ450, is it easy to install on stock system?
3 months 5 days ago
MotoSportExpert
Expert MotoSport Staff
3 months 3 days ago
A: Yes. Installation of a slip-on is very easy. 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.
Kevin
Q: Will it fit my 08 yamaha ttr230. And will it negatively affect the motor in any wat?
3 months 25 days ago
MotoSportExpert
MotoSport Staff Expert
3 months 24 days ago
A: Yes it will fit your 2008 Yamaha TTR230. 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. No there would not be any negative affects to the motor. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
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Fitment
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