This driven pulley assembly is designed for use with the secondary clutch system on 1000cc models.It functions as a key component in the continuously variable transmission, enabling smooth power delivery and efficient belt .The unit is engineered to match specifications for proper fitment and performance.It includes all necessary components for installation and is built to withstand normal operational stresses encountered in all-terrain and vehicle applications. This is a non-OEM replacement.Any mention of brand names is strictly for compatibility clarification.