2011 Yamaha YZF-R1 Specs, News, and Review

2011 Yamaha YZF-R1Ultra-lightweight, compact, 998cc, DOHC, 16-valve, liquid-cooled, 40 degree inclined, in-line four-cylinder engine with "crossplane" style crankshaft. The key components of this cutting edge engine design are the "crossplane" crankshaft and an uneven firing order. Both of these features are used on Yamaha's championship winning M1 MotoGP racer. Please note �