ATI Performance Products 917242 Super Damper Harmonic Balancer 7.5" SFI 18.1 for GM LS1/LS2

The ATI Performance Products 917242 Super Damper is a high-performance harmonic balancer engineered specifically for GM LS1/LS2 engines. This patented serpentine series damper eliminates destructive torsional crankshaft vibrations that rob horsepower and cause engine damage, making it ideal for high-RPM street and racing applications.

Key Features:

• Steel construction with 7.5-inch outer diameter (stock OEM size)
• Elastomer dampening design with steel inertia weight and computer-machined O-ring grooves
• SFI 18.1 certified for competition use
• Six-groove serpentine belt design with integrated A/C pulley
• Laser-engraved 360-degree timing marks for precision tuning
• Internal balance configuration with single keyway
• Black zinc chromate finish for corrosion resistance
• Tunable, rebuildable, and efficient at all RPM ranges

The ATI Super Damper utilizes a proven elastomer construction with steel inner and outer shells containing a precision-balanced inertia weight. This design provides superior harmonic dampening compared to traditional rubber dampers while remaining tunable and rebuildable for long-term performance. Compatible with GM LS1/LS2 F-Body and GTO applications using the stock serpentine drive system with air conditioning. Mounting hardware sold separately.