Jump to content
Sign in to follow this  

Why no FMF 4.1 silencer and spark arrestor?!?

Recommended Posts

I'm racing the Idaho City 100 in a month and need a spark arrestor, per forest service land, and silencer quieter then 96 db, per Idaho City ordinance. Why is it so hard to find these 2 items combined to fit in one hole?!?

The exhaust in question is a FMF Factory 4.1 TI system with mega bomb header on my '09 YZ450F. I'm finding some conflicting part numbers from a probably out dated parts catalog. I would think that the 27-5695 part number would imply WITH SA unlike the company listing it says with out. Does anyone have similar problems like this? Is it still approved if I weld the core of the stock 94db silencer to the spark arrestor insert I also have? Being AMA sanctioned, i'm sure they know all the tech short cuts and cheats to look for.

http://www.powersportparts.net/FMF-Racing-4-1-4-1C-94DB-INSERT-40631-p/tr27-5617.htm

Share this post


Link to post
Share on other sites

^^^ You sir are my hero! I searched the net and the images are exactly what I need. Everywhere is out of stock so I ordered directly from FMF and hope I get it before June. If I ever come across you on the trial I'll fix a flat for you or something.

Share this post


Link to post
Share on other sites
^^^ You sir are my hero! I searched the net and the images are exactly what I need. Everywhere is out of stock so I ordered directly from FMF and hope I get it before June. If I ever come across you on the trial I'll fix a flat for you or something.

Glad I could help. I don't know why they make it so hard to find!

Share this post


Link to post
Share on other sites

Wow- how did you find that link. I searched all over the fmf site for it and couldnt find it.

One question- That works for the regular 4.1 (not carbon or Titanium) right? It says Carbon/TI on the description. I'd assume they're the same.

Share this post


Link to post
Share on other sites
Wow- how did you find that link. I searched all over the fmf site for it and couldnt find it.

One question- That works for the regular 4.1 (not carbon or Titanium) right? It says Carbon/TI on the description. I'd assume they're the same.

There used to be a way to get there under accessories or something. When they updated their site recently, they must have forgotten about it. I had it in an old email, heh.

But, ya, I'd imagine it would fit any 4.1, but who knows, mine is titanium.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

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

Reply with:

Sign in to follow this  

×