The ADV.1 Deep Concave configuration. Similar to our flagship line, the Track Spec Series, the Deep Concave option consists of a 3 piece construction using our deep concave profile forgings with a modified die designed to allow what we call a "contoured spoke leg extension." This feature allows us to engineer each spoke of the wheel specifically around the exact contour of the step lip outer rim profile.
The industry's original deep concave forging, developed by ADV.1 in 2009.
Provides a deep concave profile up to 5" for some applications.
Deep lip application using ADV.1's "leg extension" option