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FMF Stainless Steel Megabomb Header Pipe

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FMF Stainless Steel Megabomb Header Pipe
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FMF Stainless Steel Megabomb Header Pipe

Our Price: $247.49$427.49

MSRP: $274.99 - $474.99 - You save up to $47.50 (10% off)

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Details

    The science behind the Megabomb header may be FMF's greatest engineering accomplishment to date. You can bolt on a Megabomb with an existing FMF Racing slip on for as much as a 3hp boost, plus the Megabomb actually reduces noises levels by as much as 1.5dB. The Megabomb technology is revolved to produce more low end to mid-range gains as well as broadening out the mid to top end power gains over stock. The Megabomb is best used for Motocross/Supercross and GNCC style trails. Used by Factory Teams, the Megabomb is the next level technology you can have today.
  • Produces long header torque and short header over-rev.
  • Reduces sound output as much as 1.5dB.
  • Increases output from stock motor as much as 3hp.
  • #1 Header in Supercross, Motocross, Motocross of Nations and Monster Energy Cup!
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

FMF Stainless Steel Megabomb Header Pipe Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.8 / 5.0
29 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
24
5
0
0
0
Value
4.8 / 5
Durability
4.7 / 5
Ease of Installation
4.8 / 5
Fitment
4.9 / 5
Performance
4.8 / 5
Finish
4.9 / 5
Features
4.9 / 5
Recommend it?
Yes (26)
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
Excellent
This Header is amazing, careful tho! It sticks out enough to burn your leg easy, opened the old bike up tho!! Sounds good and really deep!! Plus looks buttery!!
05 Honda CRF450R
05 Honda CRF450R
January 2, 2020
Statesville , NC, US
Age: 25-44
Purchased
2 months ago
Gender:
Male
Weight:
221 - 250 lbs.
Height:
6'4 - 6'6
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
Definitely impressed
Perfect way to pick up some extra horse power and torque for your bike and it gives them an awesome sound
October 9, 2019
Riverton, UT, US
Age: 15-24
Purchased
9 months ago
Gender:
Male
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
Good price looks great performes even better pair it with th 4.1
This header pipe gives massive gains paired with 14 49 sprockets pulls hard and perfect with 13 50 for single track. Installs in seconds and looks great

-m-2019 KAWASAKI KX450F--
July 18, 2019
Bruce mines, ON, CA
Age: 25-44
Purchased
7 months 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 it
I got this with the slip on perfect fit amazing sound, I did alot of upgrades all at once with the bike so I am not sure if it's the pipe or not but i definitely feel an improvement over stock

-m-2013 YAMAHA WR250R--
March 28, 2019
97420, OR, US
Age: 25-44
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'7 - 5'9
Value
4 / 5
Durability
4 / 5
Ease of Installation
4 / 5
Fitment
4 / 5
Performance
4 / 5
Finish
4 / 5
Features
4 / 5
Recommend it?
Yes
Mega bomb
Great service and awesome mega bomb worth the money. I bought it for my 06 crf450x made a big difference.
December 11, 2018
Sterling , VA, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'7 - 5'9
Value
3 / 5
Durability
3 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
2 / 5
Finish
4 / 5
Features
4 / 5
Recommend it?
Yes
Nice replacement header
Bought this for my '16 450R and really didn't notice much of anything for performance gains. Before install I peered into the pipe to the expansion chamber area, and for my model there is just about a 1/2" hole drilled into the pipe, the chamber looks to just be faux. I didn't expect anything in terms of gains when i saw that. This doesn't mean it's the same for all models however, it just means to me Honda got it right with their design off the bat. Either way, it fit very well, is made well and looks way better than the stock header.
August 21, 2018
Shawano, WI, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 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
Must have
Added this to a 2014 crf250R. Super easy to install and added the best performance. I wish I would have installed earlier.
Pretty!!!
Pretty!!!
August 8, 2018
Clements, CA, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
131 - 160 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
Make bike come alive!
Works great. Gave the bike a lot of power and really made it run good.

-m-2007 YAMAHA YZ450F--
August 2, 2018
Terreton, Idaho, UM
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
>281 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
Needed that low end and got it. Easy installation. Found videos online to help
July 15, 2018
Olympia, WA, US
Purchased
1 year ago
Weight:
131 - 160 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
nice pair
looks great, can’t wait to try it out on the trails, put this and q4 hex fmf on it and bike is noticibly quieter, but that was just warming it up fit great didn’t need to modify anything
User submitted image
Added Jul 11, 2018
July 11, 2018
kankakee, IL, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
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 19 questions Browse 19 questions and 83 answers
Will this require the FMF silencer? or can I use my stock silencers?
Parker G on May 2, 2017
BEST ANSWER: Yes it should work but you won't really get the max benefit out of the header if any. The header was designed to work best with the fmf silencer. I would save up and purchase a silencer too
I have an 07 trx450er. Will this work with a Yoshimura silencer?
A shopper on May 3, 2017
BEST ANSWER: As long as the yoshimura is a slip on designed to work with the stock header than yes it will bolt right on no problem
does this include the mid pipe?
A shopper on Jan 1, 2017
BEST ANSWER: For my 2007 YZ250F, it was only the header. However, on my full FMF exhaust, I purchased this part to replace only the front header and I had everything I needed. Simply unbolt the existing headpiece and replace with this one. Personally, I ended up taking the full exhaust off and re-mounting everything just to make it fit all nice and neat. In terms of performance, this is my favorite header - much better than stock all around and I even prefer it everywhere (bottom and top end) compared to the FMF power bomb.
It says for closed competition only , but can you tell if you put it on and use for street use ?
darrell m on Aug 12, 2017
BEST ANSWER: In my application for a 2007 Yamaha YZ250F, the motorcycle is not street legal and therefore street use was not an issue. If you have a street legal motorcycle that will accept this part, it will probably make a noticeable power gain...but in terms of being legal for street use, that might depend upon specific laws in your area. On my bike, I used it for trail riding, mx track practice and occasional racing, so it was not only used in a competition setting.
Is this or the powerbomb better for motocross?
Hannah C on Feb 14, 2017
BEST ANSWER: I've ran both headers. I prefer the megabomb for mx because it gives a better hit off the bottom to mid range .
Does the header come with the mid pipe?
Rebecca S on May 30, 2019
BEST ANSWER: Yes. If you have the fmf muffler you don’t use the adapter because the fmf header is bigger diameter.
Do you have to remap your bike? Crf 250 r.
A shopper on Oct 9, 2019
BEST ANSWER: I have a 2018 KLX250 that was upgraded with a KLX300 cylinder and piston. Next came a Yoshimura RS-2 Yes...I had to remap my bike. You need to know the rest of the story though. First came a Yoshimura RS-2 muffler and FMF Megabomb header but it wouldn't run right. I installed a Dynojet Power Commander Fuel Controller and had it dyno tuned but still didn't run as I would like. Do not install an O2 bypass as the PCFC will leave you stranded...Dynojet tech support clued me in and hasn't failed me since. Sent away to WEBIKE and got a set of Yoshimura stage 1 cam shafts and a larger Beet fuel injector. The next dyno said 26 HP. I'd like more but it started out life as a KLX250 so I'm happy.
Does the FMF megabomb have a packing inside of its core ?
Brandon K on Sep 22, 2018
BEST ANSWER: The Packing is definitely in the FMF muffler section that connects rearward of the header. The Megabomb does not have packing just an expansion chamber. Hope this helps
Will I need to buy a gasket for my header to install this or will the gasket be included for a 2008 YZ 450F?
Mike P on Jun 17, 2019
BEST ANSWER: I’m not sure what the 08 fitment is. But if you take the head pipe off, you will see if you have a gasket or not. I have a 13 WR450 and I just needed a bead of high temp gasket sealer.
do i need to buy a new mid pipe for my bike if i buy this pipe?
Ronnie k on Oct 24, 2018
BEST ANSWER: I do not believe you do. I replaced my header with an FMF Mega Bomb using the stock muffler with no fitment issues. This is on an 09 YZ250F. I also installed the carbon fiber heat shield on the Mega Bomb to not cook my pants.
Will this work with any slip on mufflers (for kx250f 2018)?
Like T6 PC for example?
MOTTEQUIN C on Jan 14, 2020
BEST ANSWER: I use my Megabomb header with a Yoshimura RS2 and installed like it was made for it so there shouldn't be issues with other mufflers fitment.
is this a bigger pipe than the yz450fx? size wise, like if the fx pipe is 2 inches will this be bigger than that or no???
A shopper on May 20, 2017
BEST ANSWER: FMF build their pipes to be OEM compatible. For instance, I just put the Mega Bomb header and connected it to my stock silencers. The only part of the header that is larger than OEM is the chamber.
Should I get this for my 150r that am trail racing?
A shopper on Oct 6, 2019
BEST ANSWER: I would say definitely we race kx450's in harescrambles and gncc. We run them on both of our bikes
Will it work with 18 yz450f stock muffler?
A shopper on Nov 26, 2019
BEST ANSWER: Yes, it will.
Already have the 4.1 slip on with carbon fiber end cap. Will I have to change the mapping on my 2018 kx250f if I install the mega bomb header? Also what else will I need for the system?
Terry G on Jun 12, 2019
BEST ANSWER: I'm always adjusting mapping depending track location and weather....
But for general track riding no.
When I 1st install my header and tested it , it delivered exactly what I was looking for
Better low end torque and most importantly better low end throttle response (less lag time!!!)
For Hondas is this a dual exxhaust or just a single?
Ben V on Nov 20, 2018
BEST ANSWER: It looks like the exhaust will Y off at the muffler part of the machine. Therefore it will just be a single.
Hi do you have a Megabomb that fits the 2018 KTM 350 EXC-F ?. Thanks
A shopper on Oct 25, 2018
BEST ANSWER: Unfortunately, we do not have one that will fit your machine.
Will this fit a 2005 yz250f?
A shopper on Aug 23, 2018
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 already have a T6 PC slip on silencer on a KX250F 2018.
Will the FMF megabomb fit?
MOTTEQUIN C on Jan 14, 2020
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