1991 Chevrolet Suburban Ring and Pinion Set R1500 Suburban - RWD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 4.10 Ratio - Rear guaranteed to replace your current 1991 Chevrolet Suburban Ring and Pinion Set R1500 Suburban - RWD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 4.10 Ratio - Rear. 1991 Chevrolet Suburban Ring and Pinion Set comes new OEM 1991 Chevrolet Suburban Ring and Pinion Set aftermarket new 1991 Chevrolet Suburban Ring and Pinion Set of remanufactured 1991 Chevrolet Suburban Ring and Pinion Set R1500 Suburban - RWD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 4.10 Ratio - Rear.