OEM GM 11.5" AAM rear ring & pinion set, 4.63 ratio
Original Factory gear for GM 11.5" HD in a 4.63 ratio. OEM gears are recommended for quiet applications where noise may be an issue. Factory gears are the quietest application available on the market and often come at a higher cost. Factory gears come with a one year warranty against defects.
Special Fitment Notes
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