Top Speed Pro 1
it's called a Top Speed Pro 1
Net result: +7hp @ 6150rpm. Peak +2 hp. All of the gains come above 5800 rpm. No appreciable difference in hp up to 5800.
I find the sound of the Top Speed catback to be awesome throughout the entire RPM range, though sound preference is subjective. The Top Speed exhaust also saves 18 lbs in weight. For $315, its a great deal.
from spec build page....
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