The Yamaha YZF-R6 was introduced in 1999 as the super sport version of Yamaha YZF-R1 super bike, and as a companion to the more street-oriented YZF 600R sport bike which continued to be sold alongside the Yamaha R6. The motorcycle featured Yamaha's completely new engine design capable of producing over 108 hp while stationary. The YZF-R6 was the world's first 600cc production four-stroke motorcycle producing over 100hp in stock form.The YZF-R6 has been revised several times since its introduction. Starting with the 2003 model, when the R6 became fuel-injected. The from model year 2006 was a significant upgrade with a new engine management system featuring the YCC-T ride by wire throttle and a multi-plate slipper clutch.The R6 model 2008 incorporated the YCC-I variable-length intake system to optimize power at high engine rpm and an improved Deltabox frame design.PP Tuning performance parts for Yamaha YZF-R6 (2017–), rearsets, adjustable brake and clutch levers, clip-on handlebars, protectors etc. are produced from highly resistant materials. This ensures their longevity.