ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black - Internal Balance - Small Block Chevy 917261 Helmet Air System These mufflers utilize the same

These mufflers utilize the same patented Delta Flow technology that is found in Flowmaster's other Super series mufflers to deliver maximum performance

Water holes must be tapped before the plugs are screwed in

12 x 47 in

rocker tips

ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black - Internal Balance - Small Block Chevy 917261 Helmet Air System These mufflers utilize the sameThe patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines. 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. Product Description: Harmonic