*** STEEL IN STOCK SHIPS TODAY *** This adpt. is made from billet alum. or steel and allows the racer to adpt. a crank hub to their ATI dampner so that they can run crank trigger ignition without stacking up a bunch of parts.
It is drilled to use a .750" crank bolt and has the standard six 3/8" bolt on a 2.782" bolt circle that the dampner has.
Racer can choose alum. or steel from drop down menu. Some racers choose steel for an A-Fuel injected nitro application.