Yamaha's class-leading YZF-R1 attempts to fend off the latest crop of superbikes: Aprilia RSV4 RR, Honda CBR1000RR, and Suzuki GSX-R1000. Can it hold on to the crown for one more year?
Read more: https://www.cycleworld.com/2017-superbike-1000cc-sportbike-motorcycle-comparison-test-review/
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