2014 GMC Sierra Ring and Pinion Set Sierra 2500 HD - 4WD - 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 2014 GMC Sierra Ring and Pinion Set Sierra 2500 HD - 4WD - GM 10.5 in Rear - w/ 14 Bolt Cover - 4.56 Ratio - Ring and Pinion Set - Fits 4 series 4.56 & Up Carrier - Rear. 2014 GMC Sierra Ring and Pinion Set comes new OEM 2014 GMC Sierra Ring and Pinion Set aftermarket new 2014 GMC Sierra Ring and Pinion Set of remanufactured 2014 GMC Sierra Ring and Pinion Set Sierra 2500 HD - 4WD - GM 10.5 in Rear - w/ 14 Bolt Cover - 4.56 Ratio - Ring and Pinion Set - Fits 4 series 4.56 & Up Carrier - Rear.