1975 Chevrolet Suburban Ring and Pinion Set C20 Suburban - RWD - GM 10.5 in Rear - w/ 14 Bolt Cover - 4.56 Ratio - Ring and Pinion Set - Fits 4 series 4.56 & Up Carrier - Rear guaranteed to replace your current 1975 Chevrolet Suburban Ring and Pinion Set C20 Suburban - RWD - GM 10.5 in Rear - w/ 14 Bolt Cover - 4.56 Ratio - Ring and Pinion Set - Fits 4 series 4.56 & Up Carrier - Rear. 1975 Chevrolet Suburban Ring and Pinion Set comes new OEM 1975 Chevrolet Suburban Ring and Pinion Set aftermarket new 1975 Chevrolet Suburban Ring and Pinion Set of remanufactured 1975 Chevrolet Suburban Ring and Pinion Set C20 Suburban - RWD - GM 10.5 in Rear - w/ 14 Bolt Cover - 4.56 Ratio - Ring and Pinion Set - Fits 4 series 4.56 & Up Carrier - Rear.