2007 WR450f FMF muffler?
Posted November 27, 2010 - 04:54 PM
Posted November 27, 2010 - 08:37 PM
I was told it was a slip on (which it is) and no silicone was needed...
Trust me, just get some high temp silcone and you'll be rockin! use the right coupler depending on the header and no need for the clamp.
Posted November 28, 2010 - 06:08 PM
Posted November 29, 2010 - 07:35 PM
I have a Q2 and Power Bomb on my 07' since day one, no clamp or sealer and there is dents all up and down the system but the pipe to header connection has never leaked
Posted November 29, 2010 - 08:20 PM
Makes a difference! started getting more decel popping as the temps dropped this fall (messed around with jetting trying to get rid of it) and when I added the silicone it sealed it right up, runs smoother and better with the silicone. Even FMF suggests using it for optimum results.
I'd say for the few dollars for the silicone, what do you have to lose? The slip on set-up does not seal up like the stock pipe does with the clamp. I'm sure some bikes will seal better than others but if you haven't tried to seal it with silicone...you really owe it to yourself to try it, I was surprised of the difference, and I thought it ran good before.
Posted November 30, 2010 - 11:57 AM
Posted December 01, 2010 - 06:24 AM
Ya know I have had more decel popping lately with cooler temps. Ahh what the hell you talked me into it. Guess Im getting some silicone. What is the cheapest place to buy some anyway?
Not sure if you already got it but, just head to any auto parts store and they will have high temp silicone. Good luck!
Posted December 01, 2010 - 12:43 PM
Posted December 05, 2010 - 09:38 PM
I think the fit is a bit tighter/better if you're using a FMF header as well, as opposed to the adapter colar that comes with the slip-on, so in that case it might not be as necessary to use silicon. Just my two cents.
Posted December 06, 2010 - 09:16 AM
Edited by ruderacer87, December 06, 2010 - 10:13 AM.
Posted December 06, 2010 - 12:14 PM
Posted December 06, 2010 - 01:18 PM
tt newbee here!!!! ruderacer87 got a 07 wr450f with the same fmf muffler and stock header. stock jetting and opened air box...do i need to do jet changes...im in california from sea level to 5000 ft....thanks anyone
Definatley should re-jet:thumbsup:
Posted August 17, 2013 - 08:06 PM
I have the FMF megabomb and a LEXX MX slip on; this weekend the adapter collar, which was never really seated properly, slipped out all the way and I noticed the leak from the obvious increase in sound and the heat. I could not get that adapter back in place, is there a trick or is the suggestion to do away with the adapter and run silicone? I cannot be the only one out there that does not want to have the noise from the gap thats left when you slip the lexx onto the megabomb.
any and all constructive input is appreciated.