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2011 Yamaha WR250F

FMF Powerbomb Header - Stainless Steel - Motocross

Retail: $199.99
$189.99
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FITS: 2011 Yamaha WR250F change
 
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FMF Powerbomb Header - Stainless Steel - Motocross - Main

Product Description

  • The FMF Powerbomb header is the result of countless hours of research and development on and off the track seeking to maximize power from the exhaust system.
  • The unique design of the FMF Powerbomb header provides room for the expansion of the exhaust gases creating a 10% increase in exhaust flow. Translation: more power.
  • The larger "bomb" section of the FMF Powerbomb header creates more surface area to increase sound dissipation and lowering the dbs. By decreasing the sound level, your bike will more easily meet the tight sound restrictions.
  • The FMF Powerbomb header is constructed out of durable Stainless Steel.
  • Customer Reviews
  • Ask an Expert
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(12)
4.6 out of 5 stars
5 star   8
4 star   3
3 star   1
2 star 0
1 star 0
Randog Location: Camden OH
fire Location: lime springs, IA
1-10 of 12
Overall
Durability
Ease of Installation
Performance
Power
Style
Top 500 Contributor Verified Purchaser
Location: St. Louis, MO, USA
Awesome

fit very good and i could tell a difference in the power

Overall
Durability
Ease of Installation
Performance
Power
Style
Verified Purchaser
Location: Camden OH
Fmf is good stuff

You can't go wrong with fmf!

Overall
Location: Camden SC
FMF

This header works and fits great with a Powercore 4 Muffler. I recently installed it on my 2009 wr250f and it is so awesome. It really opens the bike up alot.

Overall
Top 500 Contributor
Location: Harrisburg, Pa
Great Mid-Top End Power!

The FMF Powerbomb MX header really woke up my YZ250F. The top end pulls very hard! I was skeptical if this mod would produce $170 worth of results. Out if the box the piece looks great and installation is very simple. When first used, the header turns a blueish purple, it's actually pretty neat looking. I could tell after the first fifteen minutes on the bike that I had made the right choice. Only Con: Does not come with a heat shield, burns pants easily and quickly!

Overall
Location: wisconsin
Great fit

I bought this with the FMF 4.1 exhaust. It is light weight, durable and was easy to install. There is no heat guard on this so make sure to wear long pants or riding pants to keep your leg from getting burned.

Overall
Location: lime springs, IA
Noticable power increase

was very pleased with the product. key word "was". after a year of use the header broke in half. dont think they are supposed to do that. wouldnt mind if they sent me a new one free of charge.

Overall
Top 250 Contributor
Location: missoula mt
Pretty sweet

once hot the header turns a golden brown which personally i think looks good. the power increase i could feel mid to top end. it feels like it will rev faster on the top. if anything it quieted it down from stock. installed on a 06 yz250f

Overall
Top 100 Contributor
Location: Eureka, CA
Great mid to top end power gain

I really like the power increase it give in the mid to top end range of the motor. I ride an 07 YFZ 450. the only down side is that when the muffler gets hot, it looses its stainless finish look. but you can get a cleaner to polish it back up. easy to install.

Overall
Top 500 Contributor
Location: Tremont,IL
GREAT PURCHASE

Great header sounds good and noticable horsepower, and it looks great!

Overall
Location: Monroe, MI
FMF Powerbomb

Powerbomb works well with Power Core 4 exhaust. Good power and not too loud.

1-10 of 12
1-9 of 9
BigD808 Over 4 years ago Location: P Town
What about a heat shield? Doesn't the header burn your leg and boot.?
MotoSport Staff
Over 4 years ago Location: P+RTLAND
FMF doesn't offer a heat shield for the powerbomb. Burning your boot is pretty common though for any head pipe that doesn't have a heat shield. You can use exhaust tape to help out, but it doesn't really look that great.
Top 500 Contributor
1 year 1 month ago Location: St. Louis, MO, USA
no not at all my bike came with a heat shield from the factory and i cant even feel the heat
SharkofPool Over 4 years ago
Does this pipe require a mid pipe, does it bolt up to the muffler, which I have a FMF Powercore 4?
Expert MotoSport Staff
Over 4 years ago Location: Portland, OR
This will mount up to the powercore 4 slipon exhaust. The mid pipe that came with the slipon will be all you need.
Top 500 Contributor
1 year 1 month ago Location: St. Louis, MO, USA
depends what bike i have a 2003 yamaha wr450 and mine fit right into the muffler
wright37 Over 4 years ago
Does the power bomb header work with any exhaust?
MotoSport Staff Expert
Over 4 years ago Location: Portland, OR
FMF will not guarantee fitment of their power bomb header on anything but FMF Exhaust systems.
alpha Over 4 years ago
?
this is the only powerbomb header besides the titanium header that i can get for a 2009 wr250f?
MotoSport Staff
Over 4 years ago Location: P+RTLAND
Yep, FMF only makes this header in Titanium or Stainless.
Chlo Over 4 years ago Location: Pittsburgh
Will pre-engine changes be needed once I go from a stock header to a powerbomb header?
MotoSport Staff Expert
Over 4 years ago Location: Portland, OR
If you are mounting this on a stock exhaust their will be no guarantee of correct fitment. FMF will only guarantee fitment only on their exhaust systems. And to answer your question there's nothing you'll need to do to the engine before installation. Please take serious note to my first comment about fitting this head pipe to anything other than FMF exhaust systems.
skippadydoda Over 4 years ago
What is the difference between the Motocross and Supercross?
what is the difference between the motocross version of this header and the supercross version?
MotoSport Staff
Over 4 years ago Location: Tualatin
The SX version gives you a little more low to mid power and the MX version is better for mid to top end power.
RT495 Over 5 years ago
Will it fit the fmf powercore IV exhaust?
MotoSport Staff Expert
Over 5 years ago
FMF does claim their exhaust components are compatible with most of their line. If your Powercore IV is a slip-on and worked with your stock header, than i don't see any reason the FMF powerbomb wouldn't mount up. They did engineer it around the stock header for fitment.
tazz Over 5 years ago
How much more power will it give you if you have a FMF Q4?
Expert MotoSport Staff
Over 5 years ago
You won't really notice much power gain as performance gain. FMF designed the powerbomb header to add more volume to the exhaust system without actually making it longer. That will give the bike more grunt or better low end response. the performance will be gradual through the mid range.
skippadydoda Over 5 years ago
Will this work with the stock muffler?
Top 100 Contributor
Over 5 years ago Location: Eureka, CA
You can use it with the stock muffler if you want to but, it would be more benifitial for you to purchase an aftermarket muffler, and Jet kit.
1-9 of 9

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