Opinion on Performance of Boisen Dual Stage

friar tuck

Feb 9, 2006
I have a set I've been meaning to put in my 01 RM250. A friend of mine was telling me tonite that installing those will change the "hit" of the bike. I run a Gnarly pipe (jetted per FMF) and stock silencer. I was curious as to your opinion...would I be better off with stock reeds or the Boisen DS...just for woods riding and hill climbing. Thanks guys.


May 10, 2007
If anything they should smooth it out a bit. They will add to both top and bottom due to the dual layers. They are generally well liked.
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