V-Band Adapter Module, Smaller 4 bolt GT/T3 2.5" to 3" V-Band. Precision 3D CNC machined from billet mild steel. Allows easy transition to industry standard 3" V-band. Design criterias were ease of use and compact size. This unit does not incorporate any welds and is solid in construction. Overall height is less than 1.25". V-band side is fully compatible with any of the V-flanges and clamps that we sell as well as all of our V-band based downpipes.