ATI Performance Products ATI917311 Super Damper Crankshaft Harmonic Balancer

The ATI Performance Products ATI917311 Super Damper is a precision-engineered crankshaft harmonic balancer designed for high-performance and racing engines. ATI's Super Damper line is widely regarded as the industry standard in torsional vibration damping, protecting crankshafts from the destructive harmonic frequencies generated under high-RPM and high-horsepower conditions.

Unlike factory rubber-bonded OEM balancers that can degrade over time and fail under race conditions, the ATI Super Damper uses a inertia ring and elastomer O-ring design that is tunable, rebuildable, and engineered to maintain accurate damping across a wide RPM range.

Key Features:

• Precision-machined billet aluminum construction for reduced rotating weight
• Elastomer O-ring damping mechanism — tunable and rebuildable
• SFI 18.1 specification compliant for sanctioned racing events
• Laser-etched, highly visible timing degree markings for precision tuning
• Resists heat, oil, and ozone degradation that destroys OEM rubber-bonded dampers
• Drop-in fitment matching OEM bolt patterns and dimensions
• Designed for street, strip, road race, and full competition applications

ATI Super Dampers are a trusted upgrade for engine builders and racers seeking maximum crankshaft protection and long-term reliability. The ATI917311 is manufactured in the USA to ATI's exacting tolerances, making it a direct upgrade over stock balancers in demanding performance builds.