POWERBOND RACE PERFORMANCE 10% OVERDRIVE HARMONIC BALANCER TO SUIT HOLDEN ADVENTRA VY VZ LS1 5.7L V8The PowerBond by Dayco Race Series balancers are designed especially for high revving and high horsepower street and race applications where SFI approved balancers are required. This small and light weight harmonic balancer sharpens throttle response and allows the engine to rev out faster. The unique combination of material and castings in this 10% overdrive balancer provide the maximum strength and durability of bonded dampening rubber. Each