Mazda Ring & Pinion Gears

Ratio  Ring Pinion            Pickup started using RX-7 size pig 1986
----- ----- ------  86-up RX-7, pre-86 truck, Cosmo, & RX-4 don't fit 1st gen RX-7
5.125    41     8 Race
4.875    39     8 Race
4.778    43     9 Kia Sportage 4X4 US
4.625    37     8 Race, REPU Man 74, Kia Sportage 4X4 NZ
4.444    40     9 Race, PU Man 87-88, 4X4 Auto 90-92, RX-8
4.375    35     8 Race, REPU Auto 74 Man 75
4.300    43    10 GTU, Miata 99, 4X4 89, 4X4 Man 90-92
4.111    37     9 Race, 616 Auto, 808 Auto, REPU Auto 75-77 Man 76-77, PU Auto 87-88
4.100    41    10 RX7 87-91 Man, Miata 94-97 & 99+ automatic
4.091    45    11 RX7 86
4.083    49    12 GSL-SE beginning 84/12
4.077    53    13 GSL-SE thru 84/11
3.933    59    15 12A 84 thru 84/04
3.909    43    11 RX-7 early, 12A 85, RX-7 Auto 89-91, 6-speed Miata, PU 86, 2X4 89, 2X4 2200 90-92
3.900    39    10 618, RX-2, RX-4 early, PU diesel/auto 82-84
3.727    41    11 RX-3 late, 2X4 2600 90-92
3.700    37    10 616 man, RX-3 early
3.636    40    11 RX-4 late, Cosmo, RWD 626, 6-speed Miata Australia
3.308    43    13 PU man 82-84