Complete unit ready to fit any Hemi 6 Crankshaft, ATI Superdamper, CNC Hub and ATI Fasteners

All 6 cylinder engines have inherent harmonic issues which hurt performance and destroy parts. ATI Racing has a long history at the cutting edge of Damper development and the Superdamper is widely regarded as the ultimate in protection. Used on every NASCAR, and on many 265s in Historic Touring Cars, Touring Car Masters and Drag Racing this is the ultimate Damper for your Hemi.