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ATI Performance F-Body LS1 25% Underdrive Harmonic Balancer ATI918844

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ATI Super Damper harmonic balancers are patented and feature grooves for serpentine belts machined into the outer damper shell. The dampers come standard with 6 outer grooves for standard OEM drive systems, but 8 and 10 grooves are available for supercharger or turbo applications. Serpentine dampers are available in a variety of diameters and crank hubs may be fitted with a 6-groove serpentine pulley to drive external oil pumps or vehicle accessories. The Serpentine Series Super Dampers fit all ATI GM-front crank hubs and can be adapted to many engine combinations providing maximum flexibility. They are available in steel or lightweight, hardcoated aluminum.


* Eliminates torsional crankshaft vibrations
* Exceeds SFI 18.1 specs
* Black zinc chromate finished
* Tunable, rebuildable, and extremely efficient at all rpms
* Laser engraved 360 degree timing marks

Availability: In Stock. May Ship From Manufacturer