FMF Megabomb Header - Stainless Steel

FMF Megabomb Header - Stainless Steel
FMF Megabomb Header - Stainless Steel

$247.49 - $427.99
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Description See Also: 18 Reviews 21 Questions Fitment
Item #FMF0006

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18 Reviews
3.8 out of 5 stars
5 Star   15 4 Star   4 3 Star   1 2 Star   0 1 Star   1
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All Reviews
Slipclutch
Fergus Falls, MN 56537, USA
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
It fits!!!

Installed on my 2014 YFZ450R, Love the look and power of this pipe , I paired it with my big gun
evo R slip on , had a hard time finding out if it would fit so I'll make it easier on you it does fit this slip on

ArizonaRider Verified Purchaser
Phoenix, AZ, USA
Durability 4/5 Ease of Installation 3/5 Performance 4/5 Power 4/5 Style 4/5
2013 KX 250 F Megabomb

Decided to add the Megabomb header to my previously installed FMF silencer. Very light weight but not as solid as the OEM header. Installation was simple however joining to the FMF midpipe/silencer was difficult. Even with high temp grease, difficult to join together. I have never had this problem with FMF before. Likely just a "one-off" thing. I have already purchased a carbon heat shield to place over the header - you will burn your boots/pants if you are not careful.

Unable to detect a power increase but slightly more responsive throttle. The biggest change occurred when I installed the FMF silencer 6 months ago. It will give your bike that factory look.

yz450f Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

Very nice

totruck
pa
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
I like it

this thing looks like i know what i am doing, increase in hp i don't know,bike runs great,if nothing else a conversation piece ,$ well spent i think,white bros slip on ,had too jet way rich-w/3" air box mod way fat on the main+pilot jet,runs hard +fast hard on tires

FMF Megabomb Header - Stainless Steel
13kx450fff Verified Purchaser
Hp hype

Probably recovered some hp compared to my stock dented exhaust however the " bomb" part of this pipe is just looks. The exhaust is the same diameter throughout on the inside.

rockandride6 Top 1000 Contributor Verified Purchaser
Santa Clara, CA, USA
Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 4/5
Can't beat FMF power

I knew as soon as I bolted this on I would notice a massive difference, and I was not disappointed. I could not ask for more performance from the header. Combined with the Q4 slip-on, this REALLY woke up my 2006 CRF450X. The exhaust note is much improved without being obnoxiously loud as well.

My only issue is that the location of the "Megabomb" is right where my leg tends to move to in certain cornering situations. As a result, I melted my pants the very first ride with it. Definitely an annoying oversight. Ordered the Moose carbon fiber guard and I am hoping it fixes the issue.

Hammerhead Verified Purchaser
Prairieville, LA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Best Exhaust you can BUY !!

FMF is First Class ....

Doonlavy07crf250r Verified Purchaser
Ohio, USA
Durability 4/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5
Awesome power

I would have to say I was skeptic about this product. I installed it on my 07 crf250r and at first I was concerned. The installation of was not bad until I had to place the mid pipe onto the Megabomb. The inner gasket had to be removed in order for them to connect. Therefore leaving metal on metal contact and a loose fitting. I applied high temp gasket silicone to the connections to fill the gaps and tightened the clamp to the max. Solid connection so far. The bad thing about this product that must be said is that it will GLOW RED HOT. When first installed and running at idle for about 4minutes, It began to glow hot at the header connection. After a few rides it became tolerable and less noticeable. I would recommend a heat shield, but can be rode comfortably without. On the plus side, this pipe rocks! You will notice a different in engine response and overall performance through each gear. Well worth the price for the extra boost, plus it's FMF, so you know it's great quality. Buy it.

Ryan
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Megabomb

This header fits perfect on a 06 yz250f. looks great and adds lots of power when used with ti powercore

YZMerg44 Verified Purchaser
Orange County CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
More Power!

Went with the slip on first, but after adding the mega bomb WOW what a difference. Better hit and mid range really comes alive. Not much difference on the top but overall a good purchase. YZ450F

FMF Megabomb Header - Stainless Steel
irate
shelley, id
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

bolted on in minutes, excellent fit and finish, really woke up the bottom end power.

Birdman360 Verified Purchaser
Arecibo, PR
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Cheap HP

1st it adds more HP than any other exhaust on the market, looks great and sound powerfull and best of all, free shipping.

FMF Megabomb Header - Stainless Steel
muffin
rathdrum idaho
Durability 4/5 Ease of Installation 2/5 Performance 5/5 Power 5/5 Style 5/5

i bought this along with the factory 4.1 silencer and it helped me alot with my holeshot but the combo was barely worth the money

Mike555555
Corona ca
MegaBomb is where it's at

The megaBomb header is the best header iv ever used, iv put it on many of my rides, instant difference in power, I'm not a hundred percent sold on the hp gains, but never the less it makes the power band of the bike or quad much smoother and long thoughout. I used other headers befor and Never noticed such a difference as this one, get it stainless steel.

CRF450x05
Charlevoix, MI
Great header.

FMF megabomb header is a great product! I don't know why people say it gets red hot. I ride a 2005 HOnda CRF 450x, and it definitely creates typical 4 stroke heat. It does not get overly hot though. No guard or wrap needed! I also put a FMF Powercore 4 muffler on, and I have noticed an increase in power and snap. I have always had bad issues with my bike bogging when I pour on the coals, so I have a JD jetting kit, a Boyeson Quickshot 2 accelerator pump cover, and a Twin Air power flow air filter with air box mods. The darn thing still bogs!!! This is a common problem with this model. I am getting closer, and with some more jetting tuning should have it eliminated. If you want more power, definitly go with FMF, but expect the bike to need more fuel in the low end...

BigDanO
east stroudsburg ,pa
WOW! Hold on!

Added this Mega Bomb to my Powercore 4 slip on and Wow! This header really make this bike open up! Very happy with the performance of this FMF product.

cameronkfulk Top 1000 Contributor
Phoenix, Az
Excellent pipe

May need to switch to pants that are inside the boots or get a good exhaust wrap on it. IT GETS RED. Before anyone asks or thinks you running lean... I've got fuel to air mixture set professionally, on a dyno with fuel air monitoring.
Stainless just glows under a lower heat, and the walls on this pipe are thin.

I noticed immediately that it pulls from down low into the power band... dyno says that is 8400rpm for peak hp and 8150 for peak torque. it will pull from barely rolling in third well into the power band fast and the first day almost left me behind.. bottom line this pipe works very well.

My only complaint is... well I love the feel of it... My crf 450x will pull with throttle and is now much less forgiving to poor throttle control...

Scarforlife
Elkhart indiana
Great choice

I love it. Very good buy. It might need a cover because it gets red hot.

21 Questions
Answered:   21
Not Yet:   0
Chris
Q: If I have a stock exhaust can I still bolt this on? Or do I also need to get an fmf exhaust?
3 months 3 days ago
MotoSportExpert
Expert MotoSport Staff
3 months 2 days ago
A: FMF headers, whether it be the PowerBomb or the MegaBomb, are fitted to match an FMF series muffler. We do not recommend or guarantee you try to match it to a stock muffler..
Marty
Location: LA
Q: I have a 2007 suzuki rmz250 will this be compatible with the stock muffler?
3 months 25 days ago
MotoSportExpert
MotoSport Staff Expert
3 months 2 days ago
A: FMF headers, whether it be the PowerBomb or the MegaBomb, are fitted to match an FMF series muffler. We do not recommend or guarantee you try to match it to a stock muffler..
Dirtbat835
Q: Does the megabomb header fit a stock 2015 yz250f muffler?
4 months 8 days ago
Just curious if it fits a stock muffler on a 2015 yz250f.
MotoSportExpert
Expert MotoSport Staff
4 months ago
A: FMF headers, whether it be the PowerBomb or the MegaBomb, are fitted to match an FMF series muffler. We do not recommend or guarantee you try to match it to a stock muffler..
Chris
Q: Will this fit my RS-4 yoshimura?
4 months 8 days ago
MotoSportExpert
MotoSport Staff Expert
4 months ago
A: FMF headers, whether it be the PowerBomb or the MegaBomb, are fitted to match an FMF series muffler. We do not recommend or guarantee you try to match it to a stock or other brand muffler..
Mcflurry
Location: Perth
Q: Will this fit a 1983 xt250?
Over 7 months ago
MotoSportExpert
Expert MotoSport Staff
Over 7 months ago
A: No sorry, FMF does not offer a Megabomb Header for your 1983 Yamaha XT250.
cody
Q: Plz help. i have 2006-07 honda crf250r dual exhaust?
Over 8 months ago
i need to know if the megabomb header will fit the stock dual midpipe with no alterations to the system
MotoSportExpert
MotoSport Staff Expert
Over 8 months ago
A: FMF headers, whether it be the PowerBomb or the MegaBomb, are fitted to match an FMF series muffler. We do not recommend or guarantee you try to match it to a stock muffler..
Boa1277
Location: Tucson Az
Q: Can't you use a FMF stainless header with the FMF titanium muffler?
Over 11 months ago
MotoSportExpert
Expert MotoSport Staff
Over 10 months ago
A: Yes the FMF stainless header will work with the FMF titanium muffler.
Yzrider
Location: Las Vegas, NV, USA
Q: I need a new head gasket?
1 year 2 months ago
A friend said i need a new head gasket which is obvious when changing exhausts, but does it come with it? I cant find a head gasket for sale on this web sight only complete gasket sets that dont say if they even have it. could you point me in the right direction.
MotoSportExpert
MotoSport Staff Expert
1 year 2 months ago
A: Depending on what bike you have, you would want to look in our OEM section. I assume you meant the "Header" pipe gasket and that would be found with the exhaust. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Levi
Q: I have a 2008 rmz 250 will this fit with stock exhaust and will I have to rejet my bike if I get this header?
1 year 4 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 3 months ago
A: Yes the FMF Megabomb Header will work with the stock or FMF muffler. Jetting will depend on how your bike is currently jetted and running and the conditions (altitude) you will be running at.
badamzoom
Q: Will this fit my 2009 yz250f off a 2009 wr250f?
1 year 4 months ago
MotoSportExpert
MotoSport Staff Expert
1 year 4 months ago
A: The 2009 Yamaha WR250F and YZ250F use a different head pipe.
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