What exhaust are you using on the track?

Hi. I have a k8 gsxr 750 with the stock exhaust. I'd like to change it for something that looks and sounds better. I'll be taking it to the tracks near me with 98-105 dB noise limits.

Anyone out there taking theirs to the track with noise limits? what set up do you have?

I'd prefer not to run the stock set up or one with a removable dB killer that I've seen can chop off 20% of the bikes horsepower