Harmonic Crank Damper
This all steel harmonic pulley is a direct replacement for the standard item. It has a high grade neoprene elastomer insert which 'dials out' any balance fluctuations. A must on any short stroke or high revving engine. It's also fully 'Degreed' with markings from 60 degrees BTDC to 10 degrees ATDC. The Ultimate in dampers.