ATI Performance Products ATI917789 Super Damper Harmonic Balancer Small Block Chevy SFI - 6.325in 18.1

The ATI Performance Products Super Damper harmonic balancer is engineered specifically for high-performance Small Block Chevy engines. This premium damper features a patented elastomer design that effectively eliminates torsional crankshaft vibrations at all RPM ranges, protecting your engine while maximizing power output.

Key Features:

• 6.325 inch outer diameter steel construction with black oxide finish
• SFI 18.1 certified for competition use
• 3-ring design with 2.40 lbs. inertia weight for optimal damping
• Laser-engraved 360-degree timing marks for precision tuning
• Internal balance configuration for standard Small Block Chevy engines
• Total weight: 6.00 lbs. average
• 1.245 inch crankshaft bore, 2.280 inch counterbore
• Designed for dry sump systems with standard length crank bolt
• Tunable and rebuildable with computer-machined grooves retaining proper durometer O-rings

ATI Super Dampers feature inner and outer steel shells containing a precision-machined steel inertia weight with eight computer-cut grooves. This proven design is OEM equipment on various crate engines and exceeds SFI 18.1 specifications. Mounting hardware included.