ATI Performance Products 918855 Super Damper 6.78" GM LS1/LS2 10% Overdrive

The ATI Performance Products 918855 Super Damper is a high-performance harmonic balancer designed specifically for GM LS1 and LS2 engines. This precision-engineered damper features a 6.78-inch diameter with a 10% underdrive (UD) ratio, reducing parasitic drag on the crankshaft while maintaining optimal harmonic vibration control.

Key Features:

• 6.78-inch outer diameter for compact packaging
• 10% underdrive ratio reduces accessory drag and frees up horsepower
• Engineered specifically for GM LS1 and LS2 applications
• ATI Super Damper technology provides superior harmonic vibration dampening
• Elastomer-free design eliminates the deterioration issues common with rubber dampers
• Precision-machined construction for perfect balance and longevity
• Ideal for high-performance street, strip, and racing applications

ATI Super Dampers utilize a unique internal inertia ring design that absorbs harmful crankshaft vibrations across the entire RPM range, protecting your engine from damaging harmonics that can lead to premature bearing failure and crankshaft damage. The 10% underdrive configuration reduces the rotational speed of accessories like the alternator, water pump, and power steering pump, freeing up parasitic horsepower while still maintaining adequate accessory performance for most applications.