MCN - Motorcycle News Posted January 28, 2009 Report Share Posted January 28, 2009 The 2009 Yamaha R1 boasts an all-new crossplane crankshaft engine that runs at an uneven firing interval. Watch this Yamaha promotional video for an explaination of the technology and reasoning behind their new 998cc powerplant. Watch the 2009 Yamaha R1 video test Go...More... Quote Link to comment Share on other sites More sharing options...
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