ATI Damper 5.67in Aluminum 6 Groove 13% Underdrive 3 Ring 1Pc (20052010 Dodge Non-VVT 6.1L / 392 / 426 Engines) ATI918438
5.67in Aluminum 13% Underdrive Super Damper for 20052010 Dodge 6.1L / 392 / 426 HEMI Engines
The ATI 5.67-inch Aluminum Super Damper (part ATI918438) is designed for 20052010 Dodge HEMI engines including the 6.1L, 392, and 426 non-VVT platforms. With a 13% underdrive ratio, 6-groove pulley, and precision-machined 3-ring aluminum construction, this damper reduces parasitic drag from front-end accessories, freeing up horsepower and improving engine efficiency. Perfect for street performance or naturally aspirated builds, it delivers the ideal balance of vibration control, throttle response, and long-term reliability.
Performance Highlights
- 13% underdrive ratio reduces accessory load to improve horsepower and efficiency
- 5.67-inch compact design provides tight fitment and superior balance control
- Lightweight 1-piece aluminum construction enhances throttle response and reduces rotating mass
- 6-groove pulley maintains compatibility with factory belt systems
- 3-ring inertia assembly delivers precise harmonic damping across all RPM ranges
- SFI 18.1 certified for sanctioned motorsport use and safety compliance
- Fully rebuildable for sustained precision and durability
Quick Specs
- Outer Diameter: 5.67 inches
- Material: Aluminum
- Pulley Type: 6 Groove
- Drive Ratio: 13% Underdrive
- Rings: 3
- Design: 1-Piece Super Damper
- Certification: SFI 18.1
- Applications: 20052010 Dodge Non-VVT 6.1L / 392 / 426 HEMI Engines
- Part Number: ATI918438
Why Choose ATIs 13% UD Super Damper for HEMI Engines?
The ATI918438 Super Damper is engineered for enthusiasts who want a combination of performance and efficiency. The 13% underdrive ratio slightly slows accessory speeds, reducing parasitic losses while maintaining proper charging and cooling. The lightweight 1-piece aluminum body delivers rapid throttle response, while the 3-ring harmonic assembly provides unmatched vibration control and balanceideal for high-performance street or naturally aspirated track builds.
Frequently Asked Questions
What does a 13% underdrive pulley do?
The 13% underdrive pulley slows accessory speeds by 13%, reducing drag on the engine and freeing up horsepower without sacrificing drivability or system function.
Is this damper suitable for supercharged engines?
This version is best suited for naturally aspirated or mildly boosted setups where accessory speed reduction is desired. For high-boost builds, ATIs overdrive models are recommended.
Is it compatible with VVT engines?
No. The ATI918438 fits non-VVT 6.1L, 392, and 426 HEMI engines (20052010) only. It will not fit 2009+ VVT-equipped engines.
Can this damper be rebuilt?
Yes. Like all ATI Super Dampers, the ATI918438 is fully rebuildable using ATI service components, ensuring consistent performance for years to come.
Vehicle Fitment
- 2005 Dodge Charger 6.1L HEMI (Non-VVT)
- 2006 Dodge Charger 6.1L HEMI (Non-VVT)
- 2007 Dodge Charger 6.1L HEMI (Non-VVT)
- 2008 Dodge Charger 6.1L HEMI (Non-VVT)
- 2009 Dodge Challenger 6.1L / 392 / 426 (Non-VVT)
- 2010 Dodge Challenger 6.1L / 392 / 426 (Non-VVT)
- 20052010 Dodge / Chrysler 6.1L / 392 / 426 Non-VVT HEMI Engines
Contact Beefcake Racing
Beefcake Racing is your trusted source for ATI Super Dampers and high-performance Mopar components. For assistance selecting the right damper for your HEMI build, email sales@beefcakeracing.com or call 1-855-827-7223. Our experienced team can guide you to the ideal setup for street or competition performance.
ATI Damper 5.67in Aluminum 6 Groove 13% Underdrive 3 Ring 1Pc (20052010 Dodge Non-VVT 6.1L / 392 / 426 Engines) ATI918438
5.67in Aluminum 13% Underdrive Super Damper for 20052010 Dodge 6.1L / 392 / 426 HEMI Engines
The ATI 5.67-inch Aluminum Super Damper (part ATI918438) is designed for 20052010 Dodge HEMI engines including the 6.1L, 392, and 426 non-VVT platforms. With a 13% underdrive ratio, 6-groove pulley, and precision-machined 3-ring aluminum construction, this damper reduces parasitic drag from front-end accessories, freeing up horsepower and improving engine efficiency. Perfect for street performance or naturally aspirated builds, it delivers the ideal balance of vibration control, throttle response, and long-term reliability.
Performance Highlights
- 13% underdrive ratio reduces accessory load to improve horsepower and efficiency
- 5.67-inch compact design provides tight fitment and superior balance control
- Lightweight 1-piece aluminum construction enhances throttle response and reduces rotating mass
- 6-groove pulley maintains compatibility with factory belt systems
- 3-ring inertia assembly delivers precise harmonic damping across all RPM ranges
- SFI 18.1 certified for sanctioned motorsport use and safety compliance
- Fully rebuildable for sustained precision and durability
Quick Specs
- Outer Diameter: 5.67 inches
- Material: Aluminum
- Pulley Type: 6 Groove
- Drive Ratio: 13% Underdrive
- Rings: 3
- Design: 1-Piece Super Damper
- Certification: SFI 18.1
- Applications: 20052010 Dodge Non-VVT 6.1L / 392 / 426 HEMI Engines
- Part Number: ATI918438
Why Choose ATIs 13% UD Super Damper for HEMI Engines?
The ATI918438 Super Damper is engineered for enthusiasts who want a combination of performance and efficiency. The 13% underdrive ratio slightly slows accessory speeds, reducing parasitic losses while maintaining proper charging and cooling. The lightweight 1-piece aluminum body delivers rapid throttle response, while the 3-ring harmonic assembly provides unmatched vibration control and balanceideal for high-performance street or naturally aspirated track builds.
Frequently Asked Questions
What does a 13% underdrive pulley do?
The 13% underdrive pulley slows accessory speeds by 13%, reducing drag on the engine and freeing up horsepower without sacrificing drivability or system function.
Is this damper suitable for supercharged engines?
This version is best suited for naturally aspirated or mildly boosted setups where accessory speed reduction is desired. For high-boost builds, ATIs overdrive models are recommended.
Is it compatible with VVT engines?
No. The ATI918438 fits non-VVT 6.1L, 392, and 426 HEMI engines (20052010) only. It will not fit 2009+ VVT-equipped engines.
Can this damper be rebuilt?
Yes. Like all ATI Super Dampers, the ATI918438 is fully rebuildable using ATI service components, ensuring consistent performance for years to come.
Vehicle Fitment
- 2005 Dodge Charger 6.1L HEMI (Non-VVT)
- 2006 Dodge Charger 6.1L HEMI (Non-VVT)
- 2007 Dodge Charger 6.1L HEMI (Non-VVT)
- 2008 Dodge Charger 6.1L HEMI (Non-VVT)
- 2009 Dodge Challenger 6.1L / 392 / 426 (Non-VVT)
- 2010 Dodge Challenger 6.1L / 392 / 426 (Non-VVT)
- 20052010 Dodge / Chrysler 6.1L / 392 / 426 Non-VVT HEMI Engines
Contact Beefcake Racing
Beefcake Racing is your trusted source for ATI Super Dampers and high-performance Mopar components. For assistance selecting the right damper for your HEMI build, email sales@beefcakeracing.com or call 1-855-827-7223. Our experienced team can guide you to the ideal setup for street or competition performance.
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