The evolution of Biltwell's original 4130 chromoly seat hinge Second-generation welded seat bracket now features an even tougher investment-cast steel pivot head Cast chromoly hinge head Laser-cut 4130 chromoly steel strap Seat bracket is black electroplated for durability Raw steel pivot bracket and bronze pivot brushings Retrofits to both the original welded and newer cast hinge bung so upgrades are easy Chrome shoulder bolt. HINGE SEAT MOUNT MACHO BK
