1972 Dodge Pick-up Truck Ring and Pinion Set D100 Pickup - Chrysler 9.25 in. Rear - Ring and Pinion Set - 4.11 Ratio - 29 Spline Pinion - Rear guaranteed to replace your current 1972 Dodge Pick-up Truck Ring and Pinion Set D100 Pickup - Chrysler 9.25 in. Rear - Ring and Pinion Set - 4.11 Ratio - 29 Spline Pinion - Rear. 1972 Dodge Pick-up Truck Ring and Pinion Set comes new OEM 1972 Dodge Pick-up Truck Ring and Pinion Set aftermarket new 1972 Dodge Pick-up Truck Ring and Pinion Set of remanufactured 1972 Dodge Pick-up Truck Ring and Pinion Set D100 Pickup - Chrysler 9.25 in. Rear - Ring and Pinion Set - 4.11 Ratio - 29 Spline Pinion - Rear.