Power was slightly better than stock.
Slightly deeper tone down low (only aftermarket muffler was used as a base line)
No mounting points for heat shield, which was expected.
Bends were a tight fit but no tools or prying was needed.
I needed a sleeve for the pipe to fit (4.1 muffler) that is not supplied in package. This is not the company’s fault however it was a pain to find and order. (Call fmf if you have the same problem)
Overall great pipe and after running it changes into a heat treated look which looks amazing
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Power was slightly better than stock.
I read a lot of reviews that said it wasn't worth the money after I had ordered it and got a little disappointed but after i put it on, all i can say to that is BULL. My crf 450 is like a new bike. Amazing powers all the way threw the pipe. Tons of bottom end that was lacking before. The only thing missing is a heat shield.
Bought this FMF Power Bomb a month ago, been riding every other weekend since. I should've put it on yrs ago. Amazing difference, no more flat spot, better bottom end with torque. AWESOME PRODUCT, Thx.
fit very good and i could tell a difference in the power
You can't go wrong with 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.
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!
- Answered: 12
- Not Yet: 0
Question asked by Denton
Question:Q: Will this pipe fit a Gytr exhaustQuestion asked 7 days 18 hours ago
Question asked by Henry24
Question:Q: Does the power bomb add any more hose power? I have a 2012 kx250f and it’s produces about 39 horses, with that number raise at all if I add the power bomb?Question asked 1 year ago
Question answered by PaulUser's contributor status: Top 1Question answered 1 year agoAnswer: A: 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.
Whether for a sport bike, dirt bike, cruiser, or ATV, an after-market exhaust system or a slip-on muffler will improve the performance of your motorcycle, which is particularly important for the race track and competition.
The stock exhaust systems are designed to meet the emissions and noise-level restrictions set in place by most federal, state, and local authorities, and laws vary from state to state. It’s important that everyone check with local laws to understand what changes to your stock exhaust system are permitted.
Most after-market exhaust parts are lighter weight than the originals from the manufacturers. Most after-market exhaust parts allow the exhaust to flow more freely, and with reduced back pressure, and thereby improve performance. Performance improvements might be achieved with higher horse power and top end speed, or tuned for better low-end torque and quicker acceleration.
Allowing the exhaust to flow with less restriction usually demands adjusting and retuning of the fuel/air system, whether it is carbureted or fuel injected. In many cases, you might not know whether or not adjustment or retuning is needed until after you installed the new exhaust and taken it out for test-ride.
Fuel injection systems are usually electronically controlled. Adjusting and tuning fuel injection systems usually require a fuel management system. More info is at this site: http://www.motosport.com/blog/sportbike-and-motorcycle-fuel-management-guide
Question asked by dunnerlover
Question:Q: I have an 08 YFZ450 with a 4.1 Power Core. with this powerbomb header will i have to jet my carb ?Question asked Over 4 years ago
Question answered by MotoSportExpertUser's contributor status: MotoSport Staff ExpertQuestion answered Over 4 years agoAnswer: A: It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a local motorcycle dealership’s service department to have your bike properly jetted.
Question asked by Chaz
Question:Q: Do you have one to fit a yzf250 2001 ?Question asked Over 4 years ago
Question answered by MotoSportExpertUser's contributor status: MotoSport Staff ExpertQuestion answered Over 4 years agoAnswer: A: Yes Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct header for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Question asked by BigD808
Question:Q: What about a heat shield? Doesn't the header burn your leg and boot.Question asked Over 10 years ago
Question answered by denalimanUser's contributor status: Top 1000 ContributorQuestion answered Over 10 years agoAnswer: A: no not at all my bike came with a heat shield from the factory and i cant even feel the heat
Question answered by DrewKlannUser's contributor status: Expert MotoSport StaffQuestion answered Over 10 years agoAnswer: A: 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.
Question asked by SharkofPool
Question:Q: Does this pipe require a mid pipe, does it bolt up to the muffler, which I have a FMF Powercore 4Question asked Over 10 years ago
Question answered by james718User's contributor status: Expert MotoSport StaffQuestion answered Over 10 years agoAnswer: A: This will mount up to the powercore 4 slipon exhaust. The mid pipe that came with the slipon will be all you need.
Question answered by denalimanUser's contributor status: Top 1000 ContributorQuestion answered Over 10 years agoAnswer: A: depends what bike i have a 2003 yamaha wr450 and mine fit right into the muffler
Question asked by wright37
Question:Q: Does the power bomb header work with any exhaust?Question asked Over 10 years ago
Question answered by james718User's contributor status: MotoSport Staff ExpertQuestion answered Over 10 years agoAnswer: A: FMF will not guarantee fitment of their power bomb header on anything but FMF Exhaust systems.
Question asked by alpha
Question:Q: ?Question asked Over 10 years agothis is the only powerbomb header besides the titanium header that i can get for a 2009 wr250f?
Question answered by DrewKlannUser's contributor status: Expert MotoSport StaffQuestion answered Over 10 years agoAnswer: A: Yep, FMF only makes this header in Titanium or Stainless.
Question asked by Chlo
Question:Q: Will pre-engine changes be needed once I go from a stock header to a powerbomb header?Question asked Over 10 years ago
Question answered by james718User's contributor status: Expert MotoSport StaffQuestion answered Over 10 years agoAnswer: A: 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.
Question asked by skippadydoda
Question:Q: What is the difference between the Motocross and Supercross?Question asked Over 10 years agowhat is the difference between the motocross version of this header and the supercross version?
Question answered by JesseCUser's contributor status: MotoSport StaffQuestion answered Over 10 years agoAnswer: A: The SX version gives you a little more low to mid power and the MX version is better for mid to top end power.