T4 Port Shape: Twin Divided Ports Divorced. T4 Bolt Pattern: 2.75" x 3.25" (70mm x 82mm). T3 Port Shape: Twin Divided Ports Divorced. T3 Bolt Pattern: 1.74" x 3.39" (44mm x 86mm). All our products are CNC milled using the latest CAD/CAM programs which are built in house on 3 and 4 axis high precision machinery.
