Radial Fin Derby Cover (5h)

Enhances the depth efect by radial arrayed fins.

Thickness is about 25mm.
Fin height is about 4mm.

Only outer edges of the fins are polished.
Could fit on big twin '99-.

Same designed point cover is also available,1102-06.

It fits most big twin from 99 to 2017 except Touring model from 2016,Narrow-Profile outer Primary and Milwaukee-Eight.


If you use it on Dyna from 2006,Softail from 2007 and Touring model from 2007 to 2015,please use optional gascket or Harley davidson genuine parts 25416-99C. The Derby cover from these model has a groove for O-ring (shown in picture).