ISDE Legal Slip-on.....Best Choice?

Ladies and Gents,

I am sure that this question has been answered many times before but I must ask for my own knowledge. I am racing in an ISDE in two weeks and I need a spark arrestor/ silencer.....I have complete stock exhaust right now and the noise will flunk any decibal test required to race. Any recommendations? The bike is an 03' CRF450r.....

thanks,

Mike :naughty:

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