A system from Shimano consisting of a rear sprocket set, drum and chain with a unique design. Developed for easier gear changes and increased efficiency.

DYNA-SYS 11 technology refers to a gearing system on bicycles, focused on optimising shifting performance and precision. The main objective of this technology is to provide a measured gear stroke pattern in the most frequently used range. As a result, the cyclist experiences smoother and more balanced pedalling, resulting in improved control and comfort.