ATI Damper 7.53in Aluminum 11 & 6 Groove OEM Size (20092013 Chevrolet Corvette LS9) ATI918634
OEM-Size Super Damper for Corvette LS9 Engines
The ATI 7.53-inch Aluminum Super Damper (part ATI918634) is purpose-built for the 20092013 Chevrolet Corvette ZR1 equipped with the supercharged LS9 engine. Designed with an OEM-size 11 & 6-groove dual pulley, it retains full factory belt compatibility while delivering race-proven harmonic stability. Constructed from precision-machined billet aluminum and SFI 18.1 certified, this damper eliminates torsional vibrations that rob performance and reliabilitymaking it the ultimate choice for high-performance LS9 builds.
Performance Highlights
- 7.53-inch OEM-size outer diameter for perfect factory fitment and balance
- Dual 11 & 6-groove pulley configuration supports supercharger and accessory drives
- Billet aluminum construction provides maximum strength with minimal weight
- Precise harmonic control protects crankshaft and bearings under boost
- Direct-fit design for LS9-equipped Corvette ZR1
- SFI 18.1 certified for motorsport-grade safety and reliability
- Fully rebuildable for long-term performance consistency
Quick Specs
- Outer Diameter: 7.53 inches
- Material: Aluminum
- Pulley Type: Dual 11 & 6 Groove
- Design: OEM-Size Super Damper
- Certification: SFI 18.1
- Applications: 20092013 Chevrolet Corvette LS9
- Part Number: ATI918634
Why Choose ATIs OEM-Size Super Damper for the LS9?
The ATI918634 Super Damper maintains factory supercharger drive ratios while offering the superior balance and vibration control ATI is known for. Perfect for stock or mildly modified ZR1s, it ensures smoother power delivery, increased durability, and reduced wear on critical engine components. Whether youre cruising or hitting the track, this damper keeps your LS9 running at peak precision.
Frequently Asked Questions
Is this a direct OEM replacement?
Yes. The ATI918634 matches OEM diameter and pulley alignment for direct bolt-on installation.
Does it retain the factory supercharger drive?
Yes. The 11 & 6-groove pulley configuration perfectly supports LS9 supercharger and accessory belts.
Is it suitable for modified engines?
Yes. Its ideal for both stock and performance-upgraded LS9 applications, including mild boost upgrades.
Is the damper rebuildable?
Yes. Like all ATI Super Dampers, the ATI918634 is fully rebuildable for long-term reliability and performance.
Vehicle Fitment
- 2009 Chevrolet Corvette ZR1 6.2L Supercharged LS9
- 2010 Chevrolet Corvette ZR1 6.2L Supercharged LS9
- 2011 Chevrolet Corvette ZR1 6.2L Supercharged LS9
- 2012 Chevrolet Corvette ZR1 6.2L Supercharged LS9
- 2013 Chevrolet Corvette ZR1 6.2L Supercharged LS9
Contact Beefcake Racing
Beefcake Racing is your premier source for ATI Super Dampers and performance components for high-powered Corvettes. For ordering or technical assistance, email sales@beefcakeracing.com or call 1-855-827-7223. Our experts will help you find the perfect damper for your LS9 build.
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