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The ATI inertia ring with a 5.5 designation is a steel, three-ring element designed for installation inside crankshaft dampers. Its three-ring profile offers a higher contained mass option for builders and technicians restoring or modifying damper inertia. Use this factory-specified inertia ring where a three-ring steel replacement is required and follow damper service procedures.
ATI Inertia Ring - 5.5 - Steel - 3 Ring
