ATI Performance Products ATI918430 Super Damper Harmonic Balancer SFI - 7.074 3-Ring 18.1

The ATI Performance Products ATI918430 Super Damper is a high-performance harmonic balancer designed exclusively for racing and high-RPM street engines. This standard 3-ring damper features a precision-engineered aluminum shell with a steel hub and inertia weight system that effectively eliminates destructive torsional crankshaft vibrations at all engine speeds.

Key Features:

• Patented elastomer design with eight computer-machined grooves retaining proper durometer O-rings
• SFI 18.1 certified for NHRA and IHRA competition
• Laser-engraved 360-degree timing marks for precise tuning
• 7.074-inch outside diameter with single keyway
• Black zinc chromate finish for corrosion resistance
• Internally balanced configuration
• Tunable and rebuildable for long-term performance

The damper consists of a 6.25 lb. aluminum shell, 4.50 lb. steel inertia weight, and an average 2.40 lb. steel hub. ATI Super Dampers have been proven in Winston Cup competition and drag racing for decades, making them OEM equipment on various high-performance crate engines. Whether you're building a race engine or a high-performance street machine, this harmonic balancer delivers superior vibration control and reliability. Mounting hardware sold separately.