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FMF PowerBomb Stainless Steel Header - 040074

  • Part #: 446575
  • Manufacturer Part #: 040074

MSRP Price: $279.99

Our Price: $251.99

You Save:
$28.00 (10%)
1 on Hand

Overview of FMF PowerBomb Stainless Steel Header - 040074

  • Unique internal PowerBomb allows sonics to expand and contract to ramp-up sonic acceleration, increase exhaust flow and add boost
  • Lessens decibels by staggering the soundwaves and is even trademarked
  • All FMF 4-stroke header systems are built from high-quality stainless steel to decrease weight and increase durability
  • Titanium PowerBomb headers also available for select applications for increased weight savings


  • Included items:
    Head pipe

Specs for FMF PowerBomb Stainless Steel Header - 040074

Color - Primary Silver
Type - Exhaust - Head Pipes & Mid Pipes Head Pipe
Units Each
Weight 6.43 lbs

Specs for FMF PowerBomb Stainless Steel Header - 040074

Color - Primary Silver
Type - Exhaust - Head Pipes & Mid Pipes Head Pipe
Units Each
Weight 6.43 lbs

Fitment for FMF PowerBomb Stainless Steel Header - 040074

See if this part fits your ride

Part 446575 fits the following machines

Yamaha
  • 2005 Yamaha YFM660R Raptor
  • 2004 Yamaha YFM660R Raptor
  • 2003 Yamaha YFM660R Raptor
  • 2002 Yamaha YFM660R Raptor
  • 2001 Yamaha YFM660R Raptor
  • 2005 Yamaha YFM660RLE Raptor Limited Edition
  • 2004 Yamaha YFM660RLE Raptor Limited Edition
  • 2003 Yamaha YFM660RLE Raptor Limited Edition
  • 2002 Yamaha YFM660RLE Raptor Limited Edition

PowerBomb Stainless Steel Header - 043106

4 out of 11 reviews
Fitment:
Sound:
soft loud
Loud
Finish:
Performance:


Fitment:
Sound:
soft loud
A Little Loud
Finish:
Performance:

Quality Product

Excellent fit and finish. Heavier than stock, but built to last. No change in noise level. Seems to have more bottom end and midrange performance. I have used FMF products for years and never been disappointed. Dennis Kirk had the best price bar none. I usually receive my order the next day. Way to go DK!

Review By:

from Maplewood, MN

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Great Buy

Dennis Kirk had the best deal I found on this pipe. I've used many FMF products before and have always been impressed by them. The pipe looks like a work of art. Only took about an hour to install. Sounds about the same to me, still using the OEM, modified muffler and running in the garage. Will have to wait until snow is gone before checking power difference outside.

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Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

Definately worth the money! I could really tell a big difference when installed! It only takes a few minutes to install!

Review By:

from Shippensburg PA

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Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

Nice but....

The header flanges had to be drilled out to fit my 07 400EX. The holes where off just enough that they messed up the threads on the studs. After drilling them to 3/8", the flanges fit perfectly. Alignment is good but it does not accept the stock heat shield, or any for that matter which doesn't really thrill me. Performance wise it's good. I'd recommend it for the person not afraid to modify a new part but I wouldn't recommend it due to the work needed to make it fit and the lack of hardware to mount a heat shield.

Review By:

from Manchester, NH

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Super

I put this on a 08 YZ450F matched with the Factory 4.1 and it is awesome. It took about 3 minutes to get on and is way stronger than the stock header, plus made the bike way stronger with a way better power delivery. Buy it, put it on and rip it up.

Review By:

from Clarksburg, WV

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Great replacement!

After buying two factory replacement headers and crushing them with ease, the FMF Powerbomb will stand the test. I do all forms of racing, from moto to harescrambles, and the powerbomb is tough enough to take a beating, and with an added bonus of more power for your steed! It's fit is spot-on, and I even used my factory silencer! Unless you like flimsy factory headers, I don't know how you can go wrong :-)

Review By:

from Southern Indiana

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Header fit extremely well, looks good. Just wish it came with the silicone it calls for, it was another 10 bucks at a parts house.

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Instructions and Manuals for FMF PowerBomb Stainless Steel Header - 040074