Best slip on for performance?

I think the Hayabusa looks way better with Duals.

When I had my busa :( I ran a single exhaust because (not that I remember my information source anymore) it was expected to give me the performance I was looking for versus a dual exhaust. Although I rate appearance highly-I rate performance higher.
 
When I had my busa :( I ran a single exhaust because (not that I remember my information source anymore) it was expected to give me the performance I was looking for versus a dual exhaust. Although I rate appearance highly-I rate performance higher.

I agree plus it makes chain maintenance much easier.
 
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