PowerBond™ by DAYCO® Supercharger Performance Balancers are designed with a unique combination of material and castings providing the maximum strength and durability of bonded dampening rubber. Increasing the diameter of the pulley also increases the speed of the supercharger leading to an increased boost. This helps reduce the need to lower the diameter of the blower pulley resulting in less belt wrap. Note: This balancer have been modified to 8-ribs that will NOT match the original OE balancer. This modified balancer changes the geometry of the original belt drive. Dayco® recommends this balancer to be serviced by a professional installer.