ATI Super Damper SFI 18.1 Harmonic Balancer - 7.48 in OD - Black - Internal Balance - GM LS-Series 1020-17 and rear of the helmet

and rear of the helmet provide maximum air flow

1-5/8 in Tubing

Tapered Spacer

Same high quality as original parts

1 in to 2 in

ATI Super Damper SFI 18.1 Harmonic Balancer - 7.48 in OD - Black - Internal Balance - GM LS-Series 1020-17 and rear of the helmetProduct Description: Harmonic Balancer Super Damper 7. 48 in OD SFI 18. 1 Steel Black Oxide Internal Balance GM LS Series Sold Individually ATI Performance Products is a company founded on innovation, precision and service. ATI harmonic Super Dampers add horsepower and torque to race, street and truck engines. ATI Performance Products is the creation of over 40 years of Transmission and performance component manufacturing and racing experience.