350z DE ATI Super Damper Race Crank Pulley

This torque spike is so severe that it not only turns the crankshaft, it actually twists the crankshaft ahead of its normal rotation and then the crankshaft rebounds.

This twisting action is known as torsional vibration. When these torque spikes and forces get into phase with the natural frequency, critical torsional harmonic vibrations occur and can be seriously destructive to the bearings and the crankshaft. Dampers are designed to control those destructive vibrations.

vThis pulley is larger in diameter than stock and requires new belts.

Features:

- Eliminates torsional crankshaft vibrations
- Exceeds SFI 18.1 specs
- Laser engraved 360 degree timing marks
- Black zinc chromate finished
- 7.074"" Outside Diameter
- 5.00 lbs total weight, 3.40 lbs inertia weight
- Provisions for factory alternator and power steering. Does not maintain A/C function.