2006 Yamaha Raptor 700R ATV Exhaust Pipe Shootout
Yoshimura RS7 Pro Series quiet full system: $575 93.1 dBA Yoshimura: 800/634-9166; www.yoshimura-rd.com The Yosh system is proof that dyno numbers are not everything. Despite cranking out the top horsepower number, its on-track performance didn't impress our testers. They noted a little more power in the midrange, but it wasn't a big boost. Overall, it had a lackluster response that simply felt flat compared to the rest. Grade: C
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