ATI Performance Products 918485 Super Damper Harmonic Balancer Overdrive HEMI - 8.900 10% 6.2L

The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance engines. This 8.900-inch diameter harmonic balancer is engineered for Gen III Hemi, Hellcat, Demon, Redeye, and Trackhawk applications, featuring a 10% overdrive design that increases boost by 3 psi when combined with custom PCM tuning.

Key Features:

• Provides balanced dampening of torsional crankshaft vibrations at all RPM while overdriving the supercharger
• 2024 Billet Aluminum-shell damper with steel hub construction
• SFI 18.1 certified for street and race applications
• Black zinc chromate finish with computer-controlled, laser-engraved 360 degree timing marks
• Internal balance design with serpentine belt configuration
• Inertia weight features eight computer-machined grooves to retain proper durometer O-rings
• Rebuildable design with replaceable O-rings

With custom tuning, this damper has yielded 60 more horsepower at the rear tires using 93 octane pump gas, and even more on E85. Requires 59.4-inch belt (Gates K100594HD recommended). Use of this pulley requires custom PCM calibration/tuning to disable factory overboost controls. Per Chrysler, this damper requires replacement of the factory crank bolt, with torque spec of 147 ft-lbs plus an additional 150 degrees.