ATI Performance Products ATI918670 SuperDamper Crankshaft Harmonic Damper

The ATI Performance Products ATI918670 is a precision-engineered SuperDamper crankshaft harmonic balancer designed to eliminate destructive torsional vibration in high-performance and racing engines. ATI SuperDampers are the gold standard in crankshaft damping technology, trusted by professional racers and serious engine builders worldwide.

Unlike factory rubber-bonded harmonic balancers that degrade over time and lose effectiveness under high-RPM stress, ATI SuperDampers use an elastomer ring damping system housed in a precision-machined billet aluminum shell. This design maintains consistent damping characteristics across a wide RPM range and is virtually immune to the heat, oil, and vibration that destroy OEM units.

Key Features:

• Precision billet aluminum construction for strength and reduced rotating mass
• Elastomer ring damping system for superior torsional vibration control
• Laser-etched degree markings for precise ignition timing
• SFI 18.1 specification compliant for sanctioned racing events
• Designed for durability under sustained high-RPM and high-horsepower conditions
• Replaces factory rubber harmonic balancer with a performance upgrade
• Improved engine longevity by reducing harmful crankshaft flex and stress

ATI SuperDampers are manufactured in the USA and are a direct upgrade over stock balancers for street performance, drag racing, road racing, and circle track applications. Proper crankshaft damping protects the crankshaft, main bearings, timing components, and accessories from vibration-induced wear and failure.