American Axle & Manufacturing (AAM), a manufacturer of axle components, driveshaft components, and repair kits for OE vehicles, has made available new 4.56 and 5.13 ratio ring and pinion gear sets for the Ram and GM 9.25” front axles.

AAM part #40146855 is a 4.56 gear set for the 2007-2013.5 Ram 9.25” axle, AAM part #40146853 is a 4.56 gear set for the 2013.5 and newer Ram 9.25” axle, and AAM part #400244878 is a 4.56 gear set for the 1988 to current GM 9.25” axle. The 5.13 gear set for 1988 to current GM 9.25” axle is AAM part #40136007.

AAM says these ratios will match up to the AAM 11.5” rear axles offered in the Ram and GM truck series. In addition, ring and pinion gear sets in the 11.5” rear GM and Ram axles that match these front axle gear sets are AAM part# 4005988 (4.56 Ram and GM 11.5” rear axle), and AAM part# 40030646 (5.13 GM 11.5” rear axle).

AAM parts are the built to the same OEM production specifications that many shops have come to demand when installing replacement parts. AAM parts fit right, install right and perform right the first time. For more information and to find a local distributor, visit www.demandaam.com, call 313-758-4176, or email info@aam.com.