Aeroflow harmonic balancers are a direct OEM replacement damper which are ideal for mild street engines or as a standard replacement that don't require an expensive race balancer. The balancers are made from steel and feature a pressure bonded inner hub and outer ring for superior strength compared to the factory OE balancer. All balancers have engraved timing marks, which means no timing tape is required. Available in a variety of sizes for different engines.