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FMF Power Core 4 Hex S/A Silencer

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FMF Power Core 4 Hex S/A Silencer
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FMF Power Core 4 Hex S/A Silencer

Our Price: $314.99$323.99

MSRP: $349.99 - $359.99 - You save up to $36.00 (10% off)

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Details

    When you’re looking for pro-level performance at an amateur price, the obvious answer is the FMF Power Core 4 Hex S/A Silencer. The Power Core 4 Hex is perfect for whatever type of riding you do. Why? Because this silencer gives you increases in power throughout your ATV or motorcycle power band.

    If you’re new to riding, don’t worry. The power of the Hex is implemented in a way that maximizes usability without any unwieldy spikes. The Power Core 4 Hex does this using the Hi-flo technology in both the modular end cap and internal core to enhance exhaust gas flow, letting your engine run more efficiently. If you want looks too, all this performance is housed in a premium grade aluminum canister, stainless mid pipe, and stainless end cap for that signature, clean FMF look.

    Specs:
  • Hi-flo end cap and internal baffle
  • High performance internal packing
  • Internal core uses Hi-Flo technology
  • Spark arrestor insert included
  • Stainless steel mid pipe and end cap
  • Aluminum alloy canister body
  • Increases power and torque throughout rpm range
  • Can be used with stock or FMF header
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

FMF Power Core 4 Hex S/A Silencer Reviews

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WRITE A REVIEW
4.5 / 5.0
40 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
27
9
2
1
1
Value
4.7 / 5
Durability
4.7 / 5
Ease of Installation
4.9 / 5
Fitment
4.6 / 5
Performance
4.7 / 5
Finish
4.6 / 5
Features
4.7 / 5
Recommend it?
Yes (28)
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Great fit and look!
It fit great, installed in minutes. It looks so much better than stock. I’m not a good enough test rider to notice any difference in power. I bought it for the spark arrestor.

-m-2019 YAMAHA YZ450FX--
January 18, 2020
Lehi, UT, US
Age: 25-44
Purchased
1 month ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Sounds great
Installation is a breeze literally 10 minutes or less and much shorter than stock!

-m-2018 SUZUKI RMZ450--
User submitted image
Added Jan 15, 2020
January 15, 2020
East Windsor , CT, US
Age: 45-64
Purchased
1 month ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Great Product
Sounds great, added power to my bike and fit perfectly.

-m-2012 YAMAHA YZ250F--
December 11, 2019
Boynton Beach, FL, US
Age: 25-44
Purchased
5 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Awesome !
This muffler works very well, not too loud but louder than stock. Had to adjust fuel map after the install. A noticable power increase. I am definitely satisfied and would recommend this product.
User submitted image
Added Nov 13, 2019
November 13, 2019
Hampstead, MD, US
Age: 45-64
Purchased
5 months ago
Gender:
Male
Weight:
221 - 250 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
4 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
FMF
FMF

-m-2019 YAMAHA YZ250FX-- installed easily. great mufflers. came with spark arrestor. Shipping was fast and the price was right
September 16, 2019
Munising , MI, US
Age: 45-64
Purchased
6 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Loud AF
2011 CRF 450r sounds like a monster now! Every one loves the sound, you can't go wrong with FMF.
June 27, 2019
Dry Ridge, KY, US
Purchased
11 months ago
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
This pipe is awesome! Well worth the money! My bike sounds better than ever and I definitely notice some more power! Love FMF and Rocky Mountain atvmc!

-m-2017 KAWASAKI KX250F--
User submitted image
User submitted image
User submitted image
User submitted image
June 17, 2019
Bend, OR, US
Age: 25-44
Purchased
11 months ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
3 / 5
Finish
3 / 5
Features
3 / 5
Recommend it?
Yes
Good product at a reasonable price.
Great exhaust, spark arrestor can be installed and removed in 30 seconds or less. Nice finish. Exact fit no modifications needed. Deeper exhaust note.

-m-2019 KAWASAKI KX450F--
May 16, 2019
Auburn , WA, US
Age: 25-44
Purchased
10 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
4 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Awesome!
Sounds amazing! Keeps them ladies turning their heads to check my pipe out! ;)

-m-2018 KAWASAKI KX250F--
???
???
February 27, 2019
Yakima, WA, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Love the Fmf pipe.
Easily installed in 5 minutes. The pipe sounds great. I definitely noticed a big difference in low end and mid range power. I would definitely recommend this pipe. Factory exhaust clamp does not work on this Fmf. I bought another one but still an easy fix.

-m-2018 YAMAHA YZ250F--
January 1, 2019
Loveland, OH, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Show more
Rocky Mountain ATV/MC gift card Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 17 questions Browse 17 questions and 59 answers
Hi want to know will this fit on the stock header or do I need to buy a fmf one? On a 2011 ktm 250 sxf
Danny B on Jan 1, 2017
BEST ANSWER: This should slide right on to your OEM header.
Is the S/A removable?
Alex M on Nov 22, 2016
BEST ANSWER: Yes the S/A is going to be able to be removed.
Does it also come with a "quiet" insert or just a spark arrestor insert?
A shopper on May 1, 2017
BEST ANSWER: I believe it's a spark arrestor insert.
Looks like a piece of screen
Not sure exactly what your looking for but I don't believe you'll be disappointed !
Will this mount onto my stock header? I have a 2018 kx250f. Or do I need to buy a new header right away?
Nathan W on Apr 28, 2019
BEST ANSWER: It will fit, but you might have to install the aluminum bushing included with the muffler.
Is it a "straight thru" design?
A shopper on Apr 26, 2017
BEST ANSWER: Yes it is. Has screen insert included. Much lighter than stock fe501s part. Throaty and a ltitle loader. Power gains everywhere. Easiest mod to install
Do you need to upgrade ECU and change mapping with installing this system or can keep OEM ?
Roman P on Jun 11, 2019
BEST ANSWER: I did not - just slapped it on and it was instantly better. The fuel injection system seems to have adjusted accordingly. It does have the back-pressure cackle now though, and I have heard that a flash of the ECU can fix that. I have not done it because I'm lazy and it ain't broke, so...
Does it come with the spark arrestor installed? If not, what does it take to install it? Will it fit my 2016 YZ450f stock exhaust system, frame and side panels without modifications?
Gary J on Apr 7, 2017
BEST ANSWER: Yes it comes with a removable spark arrestor. It's a screen cone type that's held in place with a small allen bolt. Yes, it should fit your YZ without any modifications. All the newer YZ/WR platforms are pretty much the same set up. Mine fit just fine. Also note you will no longer use the stock pipe clamp coming off the header, you will need to apply some high-temp silicone to seal the joint.
What is the db rating on this pipe?
A shopper on Apr 11, 2019
BEST ANSWER: It's pretty darn loud. I never measured it, but it's the loudest of the FMF options, from what I've read.
How many decibels?
William M on Sep 21, 2018
BEST ANSWER: It tested at 96db on my WR 450
Is the spark arrestor USFS approved?
Jason P on Jan 27, 2018
BEST ANSWER: Yes. There is a placard on the end of the muffler.
I have a 2017 kx250f while i need any custom tuning to my machine so it doesn't hurt it?
A shopper on May 22, 2017
BEST ANSWER: The kx 250 is fuel injected. I do not think you need to tune your bike so it doesn't hurt it.
I have a 2005 Honda crf 450x what jets should I run with this pipe?
Logan k on Jul 29, 2019
BEST ANSWER: It shouldn't effect jetting. Ride the bike and then pull the plug and see if it has effected the plug. I would only adjust upon that condition
I have a 2010 fmf power core 4 slip on. Does anyone know what fmf megabomb header will fit? Thx for any info.
A shopper on Jan 29, 2019
BEST ANSWER: I have 2009 FMF power core 4 and it fits on my FMF power bomb header not sure about a megabomb
Will this fit an ‘06 Raptor 700R?
A shopper on Nov 25, 2019
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application.
Will this fit a 2017 Suzuki rmx450z?
Christopher N on May 12, 2019
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2019 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
This muffler will fit on KTM EXC 450??
Marios T on May 1, 2019
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2019 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
I was told that my there wasnt a fmf pipe that would fit my 2016 Husqvarna FE 450. Can anyone shed some light on this?
John B on Dec 30, 2016
BEST ANSWER: Call FMF and talk to their support team, they'll take care of it all????
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