ATI Performance Products 917752 Super Damper Crank Pulley Nissan R32 RB26DETT

Engine Compatibility: Nissan Skyline R32 RB26DETT

Approximate weight of the pulley itself is about 11 lbs, good for 600-1500HP. 

The patented ATI Super Damper is the only damper designed exclusively for high performance engines. 
- Eliminates torsional crankshaft vibrations 
- Exceeds SFI 18.1 specs 
- Laser engraved 360° timing marks 
- Black zinc chromate finished

Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight. This inertia weight has six (2-ring design) or eight (3-ring design) computer machined grooves to retain the proper durometer O-rings (dyno tested for each application).