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PMB Ultra Silent Insert on 2008 YZ450F

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I'm trying to meet a 94db limit. I already have a Pro Moto Billet "Endo" S/A installed on my stock 2008 YZ40F exhaust. PMB sells an Ultra Silent Insert for the "Endo" ($49). I'm thinking about picking one up.

Have any of you used one of these PMB Ultra Silent Inserts? Will it make 94db? Thanks in advance for any help!!

:bonk:

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I have a 08 YZ exhaust on my wr450 with PMB endo and Silent insert (not the ultra) and I test at 96dbs by the old testing method. Not sure the method you're referring to....

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