The Yamaha R6 has been the most popular bike in World Supersport racing and it will continue to race in the new Supersport Next Generation category.
Farewell To A Category-Defining Sportbike: An R6 Retrospective
YAMAHA R6 (2008-2016) Review
Jorge Halliday Racing
MotoAmerica: LaRoche, Mazziotto Racing NECO Yamahas In Supersport - Roadracing World Magazine
Radically styled new YZF-R3 is Yamaha's ultimate lightweight supersport • Total Motorcycle
2017 Yamaha YZF-R6 Review
First season of Supersport Next Generation rules yields surprising agreement and few complaints - RevZilla
The 600 cc Supersport race class no longer makes sense and Dorna is redefining it - RevZilla : r/motorcycles
Yamaha
Supersport screamers: It's the best 600cc sports bikes for 2021
Are 600cc supersport bikes dying out in racing?