08' WR450 stock silencer/ spark arrestor

Is the stock silencer an approved spark arrestor? Can't see where it says so on it.

Oops, sorry for duplicate topic, mods delete one please

my 09 wr450 stock is. it says something about the forest service on the side closest to the rear tire.

My 07 had a big screen inside it

Is the stock silencer an approved spark arrestor? Can't see where it says so on it.

Yes the stock silencer is a spark arrestor. It's stamped on the inner side near the muffler. ;)

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