The Yamaha YZF-R1, or R1, is an open class sport bike, or superbike, motorcycle manufactured by Yamaha Motor Company since 1998. amaha launched the YZF-R1 after redesigning the Genesis engine to create a more compact engine by raising the gearbox input shaft and allowing the gearbox output shaft to be placed beneath it. This design feature was revolutionary, called a ‘stacked gearbox’, it has set a precedent for other manufacturers to follow. This “compacting” of the engine made the total engine length much shorter overall, thereby, allowing the wheelbase of the motorcycle to be shortened significantly.
Yamaha YZF R1 (2009)
The Yamaha YZF-R6 is a Yamaha 600 class sport bike motorcycle, first introduced in 1998, updated in 2001, 2003, 2006, 2008, and revised in the years in between. The Yamaha YZF-R6 was introduced in 1999 as the super sport version of Yamaha’s Yamaha YZF-R1 super bike, and as a companion to the more street-oriented Yamaha YZF600R sport bike which continued to be sold alongside the R6. The motorcycle featured Yamaha’s completely new engine design capable of producing over 108 hp (81 kW) while stationary. The R6 was the world’s first 600cc production four-stroke motorcycle producing over 100 hp (75 kW) in stock form.
Yamaha YZF-R6 Project
Krista for MotrcycleUSA.com