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I just put a Gibson exhaust on my 2007 Rhino 660. It replaced a Yoshimura exhaust that was a year old, and already rusting and leaking at every seam. The Yoshimura exhaust needed repacking as well, and was so loud I could not stand to drive my rhino any more. The Gibson exhaust seems to make more torque down low in the powerband than the Yoshimura exhaust did, but does not make as much horsepower on the top end. Top speed is 52 mph with the Gibson exhaust, whereas it was 57 mph with the Yoshimura exhaust. I also had to drop down two jet sizes with the Gibson exhaust. I like the Gibson exhaust though, because it is a lot quieter than the Yoshimura exhaust was. The Gibson exhaust is quiet enough that I can actually talk to passnegers again.
3TV
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