ATI Performance Products ATI918927 Super Damper Standard Harmonic Balancer

The ATI Performance Products ATI918927 Super Damper is a high-performance harmonic balancer engineered to eliminate destructive torsional crankshaft vibrations in high-RPM performance and racing engines. Developed and refined through decades of motorsport competition, ATI's patented Super Damper design is the benchmark in crankshaft damper technology for both street and race applications.

Built with inner and outer shells in aluminum or steel, the Super Damper houses a precision steel inertia weight featuring multiple computer-machined grooves that retain specifically selected durometer O-rings — dyno tested and tuned for each application. This elastomer-based construction makes the Super Damper tunable and rebuildable, offering long-term value and consistent protection across the entire RPM range.

Key Features:

• Eliminates torsional crankshaft vibrations that rob power and cause engine damage
• Exceeds SFI 18.1 certification requirements for sanctioned racing competition
• Computer-machined inertia weight grooves retain precision durometer O-rings
• Laser-engraved 360-degree timing marks for accurate ignition timing
• Black zinc chromate finish for corrosion resistance and durability
• Tunable and rebuildable design for long-term serviceability
• OEM equipment on a variety of high-performance crate engines
• Efficient vibration damping at all RPM levels

ATI Performance Products has over 50 years of experience manufacturing transmission, torque converter, and driveline components, with products proven in NHRA and IHRA competition. The ATI918927 Super Damper upholds that legacy of precision engineering for serious performance builds.