ATI Performance Products 917511 Super Damper Harmonic Balancer 6.325" Internal Balance Ford SBF

The ATI Performance Products 917511 Super Damper is a high-performance harmonic balancer designed specifically for custom internal balanced Small Block Ford engines, including 289, 302, 351C, 351W, 351M, and 400 applications. This patented Super Damper eliminates harmful torsional crankshaft vibrations that can damage engines at high RPM, making it ideal for racing and high-performance street applications.

Key Features:

• Steel shell and steel hub construction with 3-ring design for maximum durability
• 6.325-inch outside diameter with internal balance configuration
• SFI 18.1 certified for competition use
• Laser-engraved 360-degree timing marks for precise engine tuning
• Black zinc chromate finish for corrosion resistance
• Steel inertia weight with computer-machined grooves retaining proper durometer O-rings
• Three crankshaft pulley bolt holes and single keyway
• C-Tab timing tab location (3-inch)

Weight Specifications: Shell weight of 6.00 lbs, inertia weight of 2.40 lbs, and average hub weight of 2.40 lbs provide optimal vibration damping across the RPM range. The elastomer construction absorbs harmful vibrations while the steel construction ensures long-term reliability in demanding performance applications.

Designed exclusively for custom internal balanced build applications. Mounting hardware not included. Sold individually.