Mega Bomb

Anyone have a MEGA BOMB on their 450X? Not a friggin Power Bomb like I posted before. What are the noticeable power differences that people are gettting compared to stock. I like the way the stock header pulls compared to an R header that I tried. Had to shift to much with that on.

supposed to pull even harder on bottom, with more mid to top. call FMF and see what they say.

I have no personal experience with the Megbomb but FMF claims it adds couple of HP. Pricey though.

I have one, the stainless version that they finally came out with for the x. Bought it during FMF's 20% off sale so not bad on price. I'm running it with the stainless mid-pipe and a factory 4.1 can with the quiet core/sparky insert.

No need for titanium header and mid pipe as my X is a tank to begin with and I need the durability over a few ounces saved.

As compared with the full stainless Dr. D system I replaced, I like the overall power response from the FMF better. The Dr. D pull real well low to mid but seemed to give up in the high range, as stated earlier the FMF seems better over the whole range of the bike and no appreciable loss down low, it still chugs great.

Sound wise, the FMF seems quieter than the Dr D, whether a case of the Megabomb and sparky insert I'm not sure but it still barks nice when you rap the throttle. I like how the Megabomb is tucked in better than the Dr. D, I still put a guard on it as there is a better chance of pant burn with the FMF. The can is also more compact and tucked in than the Dr. D.

Fit was great and no issues at all getting it on the bike. Overall, very pleased with the product and will be putting the Dr. D system up for sale.

Edited by W8kOrSnow

:thinking:I wonder if the fmf header will work with another companys slip on:thinking:

They work with an R muffler just fine.

They work with an R muffler just fine.

Hmmm... I might just have to try one with my LeoVince muffler.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By cmckay4
      Anyone having or had problems with the starter not turning over easily on the 450X???
      I have read about this problem on CRF's ONLY and not seen anyone come up with a fix.
      Problem being is that you think there is a problem with the battery, when infact the battery is OK. When you have a good fully charged battery in the bike and press the e-start, it turns over very slowly.
      I have checked the electrical circuit and it seems OK. I am wondering if it might be the starter itself - any suggestions?????
    • By Dust_Devil
      I'll start, if you see the "Fox Sticker" out in the Dez you know you crossed paths with ol' DD.....

    • By JohnnyAirtime

      Guys and Gals...
      Post your links to any of your pictures in this thread....
      (proper placement of pictures is in the "picture" threads)
      Post your links to any of your ride reports in this thread....
      (proper placement of your ride reports is relative to the area you live/ride)
      NO TECHNICAL issues, questions or comments in this thread.
      (it'll be deleted to keep this thread clean and with only the above listed).

      Please follow this format;
      Ride Report: Gorman, Tuesday 4-17
      (by Skoot22)
      Pictures from Ride: Baja 4.14.07
      (by Johnnyairtime)
    • By dakynz
      Guys, because of a member ban the jetting database has been removed. Let's start a new one to get this great information created into a sticky for everyone's benefit. Please stick to the information below.
      Temperature Range:
      Smog (AIS):
      Airbox Modified Top:
      Airbox Modified Sides:
      Backfire Screen:
      Air Filter:
      Pilot Jet:
      Main Jet:
      Needle Clip Position:
      Fuel Screw Type:
      Fuel Screw Setting:
      AP Modified:
      Leak Jet:
      AP Cover:
      Exhaust Type:
      Exhaust Modified:
      Pink Wire Modified:
    • By 2can
      I've studied the Jetting sticky's but still have a number of questions:
      I bought my '06 a couple of years ago and had a smog block-off kit installed and the pilot jet was upsized to a 48 and the air box opened up top only. The bike has appeared to run a little lean at times and got hot on a couple of occasions in elevation and on one other occasion. I'm looking at upping the main jet to either a 165 or 170 to help with the possible lean condition. The bike currently has a 142 main jet in it which I believe is the stock size. It looks like the most widely used Needle Jets are the JD Red, but it doesn't look like they are sold separately, is this correct?
      I was going to also get a 45 pilot to have options for further tuning. My assumption is that every bike is a little different and that where you ride is going to have a lot to do with jetting. We ride mostly, mojave desert, baja, and southern Utah with elevations from sea level to 9,000 feet but the higher elevations are generally for a short period as we generally continue through the peaks and head back down.
      I'm looking to convert from a stock exhaust to possibly an FMF Q4. I want something a little throatier but not overly loud and will provide a balanced flow of intake/exhaust.
      So can I get the JD Red Needle Jet by itself or can I get by using the stock and move the clip and be just as happy. I'm just looking to enhance overall performance of the engine and maintain reliability.