New  Older stock 4.10  [41/10 ] Richmond  8.5  G M  ring and Pinion  ,New not in the original box ,perfect condition , These are USA made,with the Large Richmond Name  stamped into the outside of the Ring Gear  not the new  imported  EXCEL brand of Richmond . Will work on any 8.5 posi unit from 2.73 ratio and numerically higher ,UPS shipping 19.00  lower 48 only NO Exports