1" ID roller bearings are pre-installed and the brake rotor/pulley flanges come in H-D style mount pattern with 56mm center

Taillight only

89-99 Softail

12-14 NC 700S/X

With a carved handle and stonewashed blade

arlen ness velocity 90deg air cleaner for harley BS90 1" ID roller bearings areIt greatly helps, when trying to maximize airflow through a filter, to have a large filtering area. But building a huge filter was a no go, it had to be small and very effective. This is where the Arlen Ness design artists started. Adding the inside surface of the air cleaner to the outside adds a huge amount of filtering area. With the integrated radiused air inlet this air cleaner showed some of the highest flow numbers that Ness ever tested. The