yamaha r15

The R-Series Pedigree: YZF-R15 Model Evolution. A record of all major model changes to the YZF-R15. 2008. 2011. 2017. 2022. Liquid-cooled SOHC 4-valve single-cylinder engine. Forged piston and DiASil Cylinder. Roller rocker arm and offset cylinder design. yamaha rx 100