ATI Performance Products ATI918582 Super Damper Harmonic Balancer for Nissan SR20DET

The ATI Performance Products ATI918582 Super Damper is a high-performance harmonic balancer designed specifically for Nissan SR20DET engines in rear-wheel drive applications. This precision-engineered component eliminates torsional crankshaft vibrations that can cause premature engine wear and failure in high-performance applications.

Key Features:

• Aluminum 3-ring shell construction with steel inertia weight for optimal vibration dampening
• SFI 18.1 certified for racing applications
• Laser-engraved 360-degree timing marks for precise engine tuning
• Black zinc chromate finish for corrosion resistance
• 5.500-inch outside diameter with 2.750-inch bolt circle pulley mount
• Dual 4-groove and 5-groove serpentine belt configuration
• Internal balance design for direct OEM replacement
• Tunable and rebuildable construction

The Super Damper features eight computer-machined grooves in the inertia weight that retain proper durometer O-rings, dyno-tested for maximum efficiency at all RPM ranges. This damper weighs approximately 5.7 lbs and is suitable for both street and racing applications. Note that this damper does not retain stock belt sizes; you will need to measure for the correct belt length during installation. Mounting hardware is sold separately.