ATI Damper 5.67in Aluminum 6/4 Groove 25% UD 10% A/C UD 3 Ring (19972013 Corvette) ATI918848
Dual Underdrive Super Damper for LS-Powered Corvettes
The ATI 5.67-inch Aluminum Super Damper (part ATI918848) is designed for 19972013 Chevrolet Corvettes with LS engines. This 3-ring damper features a 6/4 groove pulley setup that provides a 25% main underdrive and 10% A/C underdrive, giving you the best of both worldsperformance gains and full A/C functionality. Precision-machined from lightweight aluminum, it delivers smoother operation, reduced parasitic drag, and enhanced harmonic control under high-RPM conditions. Like all ATI Super Dampers, its SFI 18.1 certified and fully rebuildable for long-term performance.
Performance Highlights
- 25% main underdrive frees up horsepower by reducing accessory load
- 10% A/C underdrive keeps comfort while improving efficiency
- 6/4 groove pulley layout supports full serpentine belt systems with A/C
- 3-ring construction provides superior vibration damping and crank stability
- Lightweight aluminum build minimizes rotating mass for faster throttle response
- SFI 18.1 certified for motorsport safety and compliance
- Fully rebuildable design for extended lifespan and serviceability
Quick Specs
- Outer Diameter: 5.67 inches
- Material: Aluminum
- Pulley Style: 6/4 Groove
- Main Underdrive: 25%
- A/C Underdrive: 10%
- Design: 3-Ring Super Damper
- Certification: SFI 18.1
- Part Number: ATI918848
Why Choose ATIs Dual Underdrive Super Damper?
The ATI918848 Super Damper gives your Corvette LS engine the ideal balance between performance and comfort. It reduces parasitic losses for measurable horsepower gains while maintaining A/C functionperfect for street-driven builds that demand reliability and responsiveness. ATIs proprietary elastomer technology eliminates harmonic distortion, extending crankshaft life and ensuring smooth power delivery at all RPM ranges.
Frequently Asked Questions
Will this damper work with factory A/C?
Yes. The ATI918848 includes a 10% A/C underdrive pulley to maintain full air conditioning operation while improving efficiency.
What are the benefits of an underdrive damper?
Underdriving accessories reduces drag on the crankshaft, freeing up 510 horsepower and improving throttle response.
Is this damper safe for track use?
Absolutely. Its SFI 18.1 certified and approved for racing and high-performance applications.
Can the damper be rebuilt?
Yes. All ATI Super Dampers are fully rebuildable to maintain top performance over time.
Fitment
- 1997 Chevrolet Corvette
- 1998 Chevrolet Corvette
- 1999 Chevrolet Corvette
- 2000 Chevrolet Corvette
- 2001 Chevrolet Corvette
- 2002 Chevrolet Corvette
- 2003 Chevrolet Corvette
- 2004 Chevrolet Corvette
- 2005 Chevrolet Corvette
- 2006 Chevrolet Corvette
- 2007 Chevrolet Corvette
- 2008 Chevrolet Corvette
- 2009 Chevrolet Corvette
- 2010 Chevrolet Corvette
- 2011 Chevrolet Corvette
- 2012 Chevrolet Corvette
- 2013 Chevrolet Corvette
Why Buy from Beefcake Racing?
Beefcake Racing is your trusted source for ATI Super Dampers and performance parts for your LS-powered Corvette. We provide expert support, fast shipping, and competitive pricing on all ATI products. For help selecting the right damper, email sales@beefcakeracing.com or call 1-855-827-7223
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