Patented ATI Super Damper standard harmonic balancers are the only crankshaft dampers designed exclusively for high performance engines. Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight. The inertia weights have six (2-ring design) or eight (3-ring design) computer-machined grooves to retain the proper durometer O-rings (dyno tested for each application). Whether you race or just drive on the street, ATI harmonic balancers are the perfect choice.

Product features:

• Eliminates torsional crankshaft vibrations
• Exceeds SFI 18.1 specs
• Black zinc chromate finished
• OEM equipment on a variety of crate engines
• Tunable, rebuildable, and extremely efficient at all rpms
• Laser-engraved 360 degree timing marks
• Supercharger and power steering drive pulleys available for some applications

• Engine Balance: Internal
• SFI Rating: SFI 18.1
• Degree Markings: Yes
• Degree Marking Range: 360
• Outside ⌀ (in.): 6.78"
• Groove Quantity: 6
• Keyway Quantity: One
• Harmonic Balancer Material: Aluminum
• Harmonic Balancer Construction: Steel
• Harmonic Balancer Color: Black zinc chromate
• Mounting Hardware Included: No
• Quantity: Sold individually.

• Chrysler Hemi Charger, Challenger, 300C,Grand Cherokee, Commander, Durango VVT 5.7L & 6.4L 2011-2020

• 6 percent overdrive. For use on models with VVT engines only.