2006 Chevrolet Silverado Ring and Pinion Set Silverado 1500 HD - 4WD - GM 9.25 in. Front - IFS - Reverse Rotation - Ring and Pinion Set - 5.13 Ratio - Front guaranteed to replace your current 2006 Chevrolet Silverado Ring and Pinion Set Silverado 1500 HD - 4WD - GM 9.25 in. Front - IFS - Reverse Rotation - Ring and Pinion Set - 5.13 Ratio - Front. 2006 Chevrolet Silverado Ring and Pinion Set comes new OEM 2006 Chevrolet Silverado Ring and Pinion Set aftermarket new 2006 Chevrolet Silverado Ring and Pinion Set of remanufactured 2006 Chevrolet Silverado Ring and Pinion Set Silverado 1500 HD - 4WD - GM 9.25 in. Front - IFS - Reverse Rotation - Ring and Pinion Set - 5.13 Ratio - Front.