FMF Powercore 4 HEX Slip-On Exhaust

FMF Powercore 4 HEX Slip-On Exhaust
FMF Powercore 4 HEX Slip-On Exhaust

$296.99 $329.99
10% Off - Save $33.00

Description See Also: 14 Reviews 11 Questions Fitment
Item #FMF000A

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14 Reviews
5.0 out of 5 stars
5 Star   18 4 Star   0 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Nick Verified Purchaser
Berks PA
Durability 5/5 Ease of Installation 5/5 Performance 4/5 Power 5/5 Style 5/5
Worth it

It helped to mellow out the bottom end to allow it to flow through trails with easy but really did help out the mid to top end power on my Yz250fx

Linkavitch
Utah
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 4/5 Style 4/5
Beats the heck outta stock pipes!

Installed the Q4 on my '15 WR450F and it fires up like a champ now that I've installed the Q4 and ECU.

Installation was pretty straightforward but I would suggest loosening the header to make fitting easier.

Using the stock header required use of a coupler that FMF provided and it took a couple taps of a mallet to slide onto the header properly.

Good sound, a little more power, and smoother running. I'd definitely recommend this to anyone.

FiremanMike
Springfield, Mo
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Best sounding exhaust around

I installed this on my 2017 WR250F and absolutely love it. Very easy installation. It took me less than 20 minutes to remove my stock exhaust and install the new FMF exhaust on my bike. It sounds great and added a nice horsepower boost.

Joey Top 1000 Contributor
Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 4/5
Awesome

Great product. Some might think it's too loud but I think it's perfect. It makes my CRF250L feel like a new bike.

Turbo
Durability 4/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
Great performance

I put this exhaust on my 08 kx it sound great. Performs very well over all great muffler for the price

Marquillex Verified Purchaser
Puerto Rico
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
Crf250r 2011

After removing the stock gasket between the header and the stock slip on it fit like a glove! It sounds great and looks awesome
It doesn't have a clamp to secure it so i highly recomend using hightemp silicon

Boogie
Cleburne, TX, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Best Add on For Your Money!!

I added a Powercore 4 to an 2007 400EX and it turned that thing into a whole new machine! Incredible torque and a lot of added top end pull, I would for sure recommend this to anybody looking for their first power add on to any four stroke machine if you are on a budget!

Mike Verified Purchaser
Freehold, nj
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Thumbs up

Didn't really need more power out of my yz450 just wanted to hear my bike haha, I'm running a stock map with slipon and all is well , I could probably get more power by having the bike mapped obviously

Skerg Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 4/5 Power 4/5 Style 4/5
Great product for the price

Great add on for the price if a spark arrestor is needed. Works great on my 2016 yz450.

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

very nice, easy to install, that along with Powerbomb header made all the difference in the world.If you are looking for more power, this is easy way to gain a little ho, seems like bike can breath, I have two identical bikes, crf250l, one with FMF one without, big difference, one without will be getting the FMF soon!

Braaaap Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Release the Kraken!

I've purchased the FMF Powercore 4 for all my other dirt bikes as well. Sounds like a beast... (re- jetting is necessary. A/F mix: pops if it's lean and surges when it's rich.)

Skerg Verified Purchaser
Colorado, USA
Durability 5/5 Ease of Installation 5/5 Performance 4/5 Power 4/5 Style 5/5

Easy install and good fit

raquel Verified Purchaser
venezuela
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
FMF Powercore 4 HEX Slip-On Exhaust - 4-Stroke

excellent product

Mikey Verified Purchaser
Oakley, CA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Sounds Awesome!

Went from stock exhaust on my '14 WR450f to this + the FMF Power bomb. Bike sounds amazing now. Noticed a nice low end power pickup as well.

11 Questions
Answered:   10
Not Yet:   1
jmotts
Location: San Pedro, Los Angeles, CA, USA
Q: Does it fit right on or did you have to buy the other piece that comes off the header?
1 month 9 days ago
im having trouble fitting mine on so im wondering if im going to have to buy the other piece that goes all the way to the header or is there some way to use what i have and dont have to buy the other piece thanks if someone can give me a little info so i can put this bad boy on looks nice cant wait to fill the performace
Honda123Lover
Location: Kansas, USA
Q: Will this fit on my 2012 crf 250r?
4 months 5 days ago
will this exhaust fit to my stock header? and is so can somone leave a link on how to do it! Thanks
MotoSportExpert
MotoSport Staff Expert
4 months 4 days ago
A: Yes the FMF Powercore 4 HEX Slip-On Exhaust Can be used with FMF or Stock OEM Header. 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.
Jason
Q: Is the powercore 4 street legal, crf250l.?
Over 7 months ago
MotoSportExpert
MotoSport Staff Expert
Over 7 months ago
A: The FMF Powercore 4 HEX Slip-On Exhaust is For Closed Course Competition Use Only. Not Intended for Street Use.
KB3NZQ
Location: Mars, PA 16046, USA
Q: Will it work with stock header on a 14 crf250L?
Over 11 months ago
MotoSportExpert
Expert MotoSport Staff
Over 10 months ago
A: Yes, FMF does build their mufflers to work with stock OEM or FMF headers.
Ryan
Location: Texas, USA
Q: Will this pair well with a megabomb header on a kx250f 2009?
Over 11 months ago
MotoSportExpert
MotoSport Staff Expert
Over 11 months ago
A: Yes. FMF mufflers are designed to work with FMF headers.
hein
Location: Wellington, New Zealand
Q: Will this fit on my crf 450X?
1 year 2 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 1 month 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 slip-on 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.
james
Q: Is it possible to install a quiet insert into this exhaust, if so what one?
1 year 4 months ago
MotoSportExpert
MotoSport Staff Expert
1 year 4 months ago
A: Yes you can find the FMF Quiet Core Spark Arrestor Insert for this muffler here:
http://www.motosport.com/fmf-hex-q4-quiet-core-spark-arrestor-insert
Coolman78
Q: Is it possible to remove the spark arrestor, and would it be good to race with?
1 year 7 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 7 months ago
A: Yes the FMF Powercore 4 HEX Slip-On Exhaust does have a removable spark arrestor screen. The Powercore 4 HEX Slip-On is a Race-inspired muffler with improved torque, increased horsepower and rugged durability. This exhaust should work great and be a noticeable difference in performance over the stock muffler on your 2012 Honda CRF250R no matter what type of racing your are doing.
Skerg
Over 10 months ago
A: Yes and yes!
johnson792
Location: Alachua, FL, USA
Q: Will i need to buy anything else for this to work on my 13 rmz 250?
2 years 1 month ago
MotoSportExpert
Top 1 Contributor
2 years 1 month ago
A: This is a complete slip on exhaust. You may need to reprogram the EFI for best performance.
ktm350
Q: Does this fit 2014 KTM 350 EXC-F?
2 years 8 months ago
MotoSportExpert
Top 1 Contributor
2 years 4 months ago
A: Yes we have a fitment for your 2014 KTM 350 EXCF bike
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