Professional Products PowerForce Harmonic Damper
Ford SB, 6.40" Dia. (28 oz.), External Balance
These dampers feature a bonding process which adheres the elastomer to both the O.D. of the hub and I.D. of the inertia ring. Both hub and inertia ring are made of strong nodular iron. 40° of bright white timing marks and then every 90°. All externally balanced dampers feature bolt-in counterweights for a greater degree of flexibility.