ATI Performance Products 918624 Super Damper Harmonic Balancer 8.53" 14% Overdrive LS9 Aluminum

The ATI Performance Products 918624 Super Damper is a high-performance harmonic balancer engineered specifically for 2009-2013 Chevrolet Corvette ZR1 equipped with the supercharged 6.2L LS9 V8 engine. This premium damper features a 14% overdrive ratio and 8.530-inch diameter, designed to eliminate torsional crankshaft vibrations across all RPM ranges while improving accessory drive efficiency.

Key Features:

• 14% overdrive pulley configuration for increased supercharger and accessory speeds
• Lightweight hardcoated aluminum construction for reduced rotating mass
• 11-groove serpentine belt surface for supercharger drive system
• Integrated 6-groove A/C pulley at OEM diameter (non-removable)
• Exceeds SFI 18.1 safety certification for competition use
• Laser-engraved 360-degree timing marks for precision tuning
• Black zinc chromate finish for corrosion resistance
• Internally balanced design
• Tunable and rebuildable for long-term performance

Part of ATI's patented Serpentine Series, this Super Damper features grooves machined directly into the outer damper shell, providing superior harmonic dampening while maintaining proper belt drive geometry. The damper bolts directly to the OEM crankshaft location and is compatible with all ATI GM-front crank hubs, offering maximum installation flexibility. The 14% overdrive ratio increases blower speed for enhanced boost and power output on supercharged applications.

Note: Always use a new crankshaft bolt during installation, as LS-series damper bolts are torque-to-yield (TTY) and designed for single use only.