Overview Reviews Product Description Harmonic Balancer - Super Damper - 7.425 in OD - SFI 18.1 - Steel - Internal Balance - Small Block Chevy - Each Product Videos Custom Field Product Reviews Write a Review Write a Review × ATI SBC SFI Harmonic Damper 7.425 Dia Int. Balance Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *