What I have found out is that the non-turbo RX7s have a 7" ring gear and the newer (85+??) have the same splines as our front diffs.

The turbo RX-7s have a larger ring gear and MIGHT be the same size as the Sportage REAR.

It seems that the Turbo RX7 is a 30 spline diff.

Are we sure that the Sportage rear axles are 28 splines not 30 splines? Much of the RX7 specs seems to be just repeats of old info that may be wrong. Could our 28 spline rear info be wrong too?


Ron Schroeder
Long Island NY
99 4DR auto Sportage, 30x950R15 tires, 3/4" strut spacer, rear air springs, Manual Hubs, FRONT Torsen LSD
00 Safari AWD, 2" lift, 30x9.50 tires, 4x4 conversion in progress
73 Pinzgauer Swiss Army troop carrier