SKU: 918485 / UPC: 800157032639
ATI Super Damper Harmonic Balancer – 8.90″ 10% Overdriven for 2015+ 6.2L Hellcat / Demon HEMI
Protect your high-performance 6.2L Hellcat or Demon engine with the ATI Super Damper Harmonic Balancer. This patented design is engineered specifically for Chrysler HEMI engines and is the only damper built exclusively for high-horsepower Mopar applications.
The 8.90″ 10% overdriven version provides increased accessory drive speed while effectively eliminating harmful torsional crankshaft vibrations. Featuring a laser-engraved timing mark, black zinc chromate finish, and a tunable, rebuildable design, this damper is OEM equipment on many 392 Mopar crate engines and is trusted in drag racing, street, and high-boost applications.
Key Features
- Patented Super Damper Design – Eliminates torsional crankshaft vibrations at all RPM
- 10% Overdriven – 8.90″ diameter for increased accessory speed
- Tunable & Rebuildable – Can be serviced and tuned for specific applications
- Exceeds SFI 18.1 Specs – Certified for high-performance and racing use
- Laser Engraved Timing Marks – Precise engine timing reference
- Black Zinc Chromate Finish – Durable, corrosion-resistant appearance
Specifications
| Detail | Value |
|---|---|
| Brand | ATI Performance Products |
| Type | Super Damper Harmonic Balancer |
| Engine | 2015+ 6.2L Supercharged HEMI (Hellcat, Demon, etc.) |
| Outer Diameter | 8.90″ (10% Overdriven) |
| Shell Material | Aluminum |
| Hub Material | Steel |
| Ribs | 10 & 6 |
| Country of Origin | United States |
| Warranty | ATI Limited Warranty |
Whats Included
- ATI Super Damper Harmonic Balancer
- Installation Instructions
Product Notes
- Designed specifically for 2015+ 6.2L Supercharged HEMI engines
- Professional installation and proper crankshaft pinning (if applicable) recommended
- Requires specific belt Here > Gates
This Part Fits
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 2015–2026 | Dodge | Challenger, Charger, Durango (Hellcat, Demon, etc.) | 6.2L Supercharged HEMI |
| 2018–2026 | Jeep | Trackhawk | 6.2L Supercharged HEMI |
Why Choose ATI Performance Products?
- Industry leader in harmonic dampers since 1992
- Patented Super Damper technology trusted in professional racing
- Precision-engineered for maximum vibration control and durability
- Exceeds SFI specifications for safety and performance
Frequently Asked Questions
- Q: What does 10% overdriven mean?
- A: The larger 8.90″ diameter spins accessories approximately 10% faster than stock for improved performance.
- Q: Is this SFI certified?
- A: Yes. It exceeds SFI 18.1 specifications for high-performance and racing use.
- Q: Will this fit my Hellcat Challenger?
- A: Yes. It is designed for 2015+ 6.2L Supercharged HEMI engines including Hellcat and Demon models.
- Q: Is professional installation required?
- A: Yes. Proper installation of a harmonic damper is critical for engine safety and longevity.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure ATI retail packaging





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