This is a genuine AMM 3:73 ring gear and pinion set for a GM 14 bolt 10.5 full float rear end. These are used in 3/4 and 1 ton trucks from 1972-current production. The tooth counts are 41 on the ring gear and 11 on the pinion. The box is clearly marked “Made in U.S.A.”

This is a genuine AMM 4:10 ring gear and pinion set for a GM 14 bolt 10.5 full float rear end. These are used in 3/4 and 1 ton trucks from 1972-current production. The tooth counts are 41 on the ring gear and 10 on the pinion.

This is a genuine AAM ring and pinion in a 4:56 ratio for the 8.5 or 8.6 10 bolt rear differential found in Chevy cars and trucks from 1972-2016.

This is a genuine AAM gear set in a 4:56 ratio for the leaf spring 11.5 rear end found in GM and Dodge applications. This can be used in a coil spring rear end if you use the special pinion bearing kit that we have available (PK11.5CONV).

This is a genuine AAM ring and pinion set in a 3:42 ratio that fits all GM 8.5 or 8.6 10 bolt differentials from 1973 and up. This includes early Camaros, 1/2 ton pickups and SUVs, Caprice, etc. In our opinion these are the best gearsets available on the market today. They tooth counts are [...]

This is a genuine AAM ring and pinion set in a 3:73 ratio that fits all GM 8.5 or 8.6 10 bolt differentials from 1973 and up. This includes early Camaros, 1/2 ton pickups and SUVs, Caprice, etc. In our opinion these are the best gearsets available on the market today. They tooth counts are [...]