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Aging Cafe` Racer
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8,715 Posts
It would be impossible for the manufacturer to tailor a bike to each individual rider so they go for averages. Things like intakes and exhausts, particularly on an aircooled bike have to be more restrictive because of the higher mechanical noise. 80db is the federal law, they don't care if it's intake noise, exhaust, piston slap or what so they choke the bikes down to meet that goal. I don't think a full on sportbike with a Ti. exhaust is going to notice any improvement in performance or weight with an aftermarket pipe, but an air-cooled twin will.



Seats, suspension and bars are all
 
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