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

$197.99 - $314.99
10% Off - Save up to $35.00

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Item #FMF001B

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78 Reviews
4.9 out of 5 stars
5 Star   91 4 Star   10 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Arizona, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 4/5 Style 4/5
Great product

Great exhaust put it in within 10 minutes, noticeable power and torque great sound as well definitely worth it and would recommend to anyone.

Medina, OH 44256, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Better Than Expected!

Amazing! This pipe was super easy to install and it sounds great! It gave my 1998 DR 650 a make over, I was amazed by the power difference. Definitely worth the price, I am impressed!

Boise, ID, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Amazing!!

I put this on my 2010 CRF250R, and holy cow what a difference it made! Sounds like a beast! It also amped the power way up, from top to bottom. I am very impressed and would recommend this to anyone.

Verified Purchaser
Bend or
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Fmf exhaust pipe

Love this pipe it sounds beefy and not obnoxiously loud, it definitely made a big difference in power!!! Sounds like my old yfz450 did, I like it, I like it a lot!!

Morrisdale pa 16858
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
This fmf exhaust pipe is so loud itsounds likeacar

This exhaust is that is a fmf exhaust it has a very deep aggressive nice aggressive tone and it sounds like a car without a muffler speeding down a highway road and it had me introuble about the loud complaints that people had the police on me so very loud exhaust wouldn't recommend getting it if you don't won't to get introuble bye the police how loud it is

McLeansboro, IL 62859, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Easy Install / Durable

10 minute install, no re-jet, have about 20 hours on it, not a scratch.

Top 1000 Contributor
Pennsylvania, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
This thing is awesome!

I put this on my 2005 kx250f. It made it sound so much better especially with the powerbomb header. It gave the bike a little more power. Looks a little better too.

FMF Powercore 4 Slip-On Exhaust - 4-Stroke
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Very impressed

The noticeable change in power on my dr 650 when I added this was phenomenal I am super pleased and will recommend this to anyone

Southern, Maaine
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Awesome

I installed this exhaust and saw immediate power and response improvements on the first ride. It also sounds great, good old four stroke thumper without being to loud. It was very easy to install, maybe 45 minutes with taking the old one off too. The fit and quality are perfect. I would recommend this exhaust to anyone who wants a quick and easy power improvement. Thanks FMF Power Team.

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

Very satisfied..Fast shipping as well.

Pennsylvania, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 4/5
AMAZING

I love this exsaust,i put it on my raptor 250 and it sounds and feels amazing when i ride it. i told my best friend to get this for his trx250ex and he thought the same thing.we both love the deep throaty sound,we drag race to see whose improved the most in speed,takeoff,power, and sound. overall it was a tie but i would definitely recommend this for anyone,its cheap for a really good price

Verified Purchaser
Weirton, WV
Durability 5/5 Ease of Installation 5/5 Performance 4/5 Power 5/5 Style 5/5
Great Pipe

Great noticeable power, easy install.
Disappointing sound for a race Pipe.

Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 4/5 Style 5/5

Super easy installation on my 14 trx 400 sounds amazing love this pipe

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.

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.

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.

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!

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.

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
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.

See 20 More Reviews
182 Questions
Answered:   175
Not Yet:   7
Pandey
Q: Will it fit Honda XR150L?
4 days 10 hours ago
maxman16
Q: The picture as it is shown seems off from what it should look like. I wanna make sure it’s the specific exhaust for this bike, thanks.?
5 days 12 hours ago
robert
Top 10 Contributor
3 days 8 hours ago
A: The image is a general manufacture picture that is not bike specific. this will be the slip on for you 2002 Yamaha yz250f (it does not include the header)
dustin
Q: Does it make the bike quiter?
5 days 17 hours ago
DaveGearhead
Top 25 Contributor Top 100 Contributor
3 days 3 hours ago
A: Almost all aftermarket exhaust systems make the motorcycle a bit louder, not quieter, due to the better flow of the exhaust.
Elite1
Location: Kentucky, USA
Q: Will this pipe void factory warranties? Thanks?
17 days ago
David
Top 10 Contributor
14 days ago
A: You'll have to check with your dealer on this.
lane
Q: Will this fit a 1993 honda 200r?
1 month 15 days ago
JustinS
Top 100 Contributor
1 month 15 days ago Location: Portland, OR, USA
A: The Powercore 4 willl fit the 1993 Honda XR200r. FMF part number: 040005
Boss2421
Q: Will this fit on a 2016 klx 140L? I know it’s not a performance bike but will it make it sound better and slightly help with performance?
1 month 17 days ago
David
Top 10 Contributor
1 month 15 days ago
A: Yes it will fit. Your bike will definitely sound better and you'll get some power gains if tuned properly.
maxman16
Q: Will this fit an 2002 yz250f?
2 months 8 days ago
Will if also fit a powerbomb or megabomb header that I have on my 2002 yz250f? Thanks
David
Top 10 Contributor
2 months 7 days ago
A: Yes.
Tool
Q: Is there a gasket between slipon and stock header pipe?
2 months 9 days ago
David
Top 10 Contributor
2 months 8 days ago
A: Yes you will need to use your stock gasket to mate this slip-on to your stock headers on the 2008 Kawasaki KLX450R
Glenn
Q: Will this exhaust work on a Yamaha XT250 without modification to stock fuel injection system?
2 months 16 days ago
David
Top 10 Contributor
2 months 15 days ago
A: We do not offer this slip on for your Yamaha XT250
Camren
Location: Arizona
Q: Will this fit my stock header on my 04 trx400ex ?
2 months 24 days ago
robert
Top 10 Contributor
2 months 23 days ago
A: Yes this will work in conjunction with your stock header.
1-10 of 182
Fitment
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See Fitments
# Part Numbers
Product Variant Manufacturer Part #
FMF Powercore 4 Slip-On Exhaust - 4-Stroke N/A
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044377
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041269
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041025
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045233
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045183
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041048
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041284
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041273
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041274
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041377
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041004
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041036
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041276
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041346
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043006
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043012
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043010
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 042148
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 042158
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 042161
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 042246
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 042000
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043011
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045135
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045134
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045011
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045226
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 042122
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 042123
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043210
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045033
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044263
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044101
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044243
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044016
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044022
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044295
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043140
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043136
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043220
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045133
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041327
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044015
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044215
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044436
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041020
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041021
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041022
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041023
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041425
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044313
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044300
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044224
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044013
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044228
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044014
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044220
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044222
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 040005
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041032
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041244
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043024
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044021
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045010
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044141
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044312
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 041364
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 042318
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 042319
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 043284
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 044110
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045266
FMF Powercore 4 Slip-On Exhaust - 4-Stroke 045430
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