Gauges show actual front and rear line pressure for making brake bias changes before or during the event. Pre-assembled units have 0-1,500 PSI liquid filled gauges with 1/8"NPT male fittings with integral bleed assembly to evacuate air from the gauges. Both horizontal and vertical versions are available, the panel size is 70mm x 114mm and it is pre-drilled for mounting. All hoses and fittings required for simple installation are available separately, please contact us with your requirements.