1090 Spark Arrestor?

What are folks using for a spark arrestor on their 1090? I guess same can be asked of 1190 and 1290

a catalytic converter

I wish this was enough. USFS ranger doesn't care when he can do the poke test.

A catalytic converter is not a legally approved US forest service spark arrestor

Wings with db killer installed

Still not legal. No “approved NFS stamp”. At least in Cali

I was wondering the same on my 1290. What to do? So I installed a ZX-9 muffler and used stainless sink screen mesh in end of muff. Also lowered muff on install so soft bags fit above muff without burning. No sticker but visable screen that I hope will have the rangers happy.

Hopefully that works. Yosh has a slip on with spark arrestor and db insert. Pricey though.

Yeah for sure. With these bikes going off road I am really surprised there isnt many options or advertising on mufflers that have them. I know Rangers can be a stickler on them. IDK? And I sure as hell dont want to be “the guy” that burned down forrests let alone people losing their homes. Cheers!!

Does the factory muffler have the said CA stamp and a screen?
I dont recall it having any of these.

I honestly dont think it does. I could be wrong. I think I remember looking for it ( USFS) and also shining a light into muffler but saw no screen. And like posted earlier they stick a rod down bung hole to check.

You could leave California and come back to the United States...

For starters I moved out of SAn Francisco and came back to planet earth.

Move to the UK, the weather takes care of these problems for us.

Because a forest ranger with a sporadic stick test when in the woods beats annual MOT inspections.
Move over here

说的很好,你有我,加上我们不允许的to ride anywhere except on our crap highways.

Says who? I called the local ranger station in capitol forest, they said the catalytic converter satisfies the requirement.

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Says every US forest service website about spark arrestors

District 36 told me that if they put their probe down the pipe and no screen or turbine, I cant participate in their event. Even if I have all the stock equipment installed.

I told them the ranger at Carnegie said it was all good. D36 said then get the ranger to write a letter on their letter head explaining why it is okay.

https://www.fs.fed.us/eng/pubs/html/03511306/03511306.htm

Under the heading SPARK ARRESTORS MUST BE INSTALLED PROPERLY