ATI Performance Products ATI917279 Super Damper Serpentine Harmonic Balancer SFI - 6.780 18.1

The ATI Performance Products ATI917279 Super Damper is a high-performance serpentine harmonic balancer engineered to eliminate torsional crankshaft vibrations in LS-series engines. This patented damper features grooves for serpentine belts machined into the outer damper shell, with six outer grooves and a 6.780-inch outside diameter.

Key Features:

• SFI 18.1 certified for racing applications
• Laser-engraved 360-degree timing marks for precision tuning
• Aluminum and steel construction with elastomer design
• Black zinc chromate finish for corrosion resistance
• Ten percent underdriven design for use without air conditioning
• Three crankshaft pulley bolt holes with single keyway
• Tunable, rebuildable, and efficient at all RPM ranges

This damper is designed for internally balanced engines and requires a shorter serpentine belt due to its underdriven configuration. The Super Damper construction exceeds SFI 18.1 specifications, making it ideal for high-performance street, drag racing, and competition applications. Mounting hardware is not included and must be purchased separately.