2007 Jeep Wrangler JK Build-Up 2007 Jeep Wrangler goes from Mild to Wild

Superior JK Rear Axle Upgrade

37″ tires + 5.13 gears + 6.1 Hemi = scared axles.

While the Jeep is down for the Hemi install, we took time to upgrade the rear axles shafts to Superior Evolution shafts. These shafts are American made 4340 chromoly with rolled splines and induction hardening. We might still break one of these shafts, but I doubt it.

The install was simple:

1. Remove stock axle shaft
2. Cut off stock bearing retainer ring
3. Press off stock bearing
4. Remove retaining plate
5. Press off tone ring for wheel speed sensor
6. Lightly press tone ring on Superior shafts
7. Slide retainer plate, bearing (with race towards the splines, like stock), and new press ring in position
8. Press on the bearing/press ring until the bearing is flush with the step in the shaft
9. Bolt the new shaft in where the stock one was.