Overview
The G2 Axle and Gear 90-2011-31U is a 1310 series pinion yoke for the rear Ford 9 Inch axle, with a U-bolt style mount. It is forged from precision steel and sized for a 1310 series U-joint.
It is sold as universal fit for the 9 Inch axle, so no specific vehicle year or model applies. U-bolt mounting is a common choice among racers and off-roaders.
Key features
- Precision forged steel body
- Fits 1310 series U-joints
- U-bolt style mounting
- Made for the D/S2-94-28X U-bolt kit, hardware not included
Driveline setup for yokes
A pinion yoke connects the driveshaft to the axle, and the U-joint angle has a strong effect on vibration. Setting the pinion angle correctly keeps the joint working within its limits and reduces wear on bearings. Measure the angle with the vehicle at its normal ride height, since loads change the geometry.
Clamp the yoke to the pinion with the right torque sequence, and replace the pinion nut if the setup calls for it. Check the U-bolt threads for damage before assembly. A worn driveline usually shows up as vibration at speed or a clunk when the throttle changes.
- Check pinion angle at ride height
- Inspect U-bolt threads before assembly
- Replace the pinion nut if the setup calls for it
Specifications
| Brand | G2 Axle and Gear |
|---|---|
| Model number | 90-2011-31U |
| UPC | 631410122947 |
| Axle | Rear Ford 9 Inch |
| U-joint series | 1310 |
| Mounting | U-bolt style |
| Material | Precision forged steel |
| Hardware | Not included |
| Fitment | Universal fit |
Vehicle fitment
Universal fit covers the rear Ford 9 Inch axle, so the yoke is not limited to one vehicle. Confirm the axle housing and U-joint match before installing.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Plan on sourcing the D/S2-94-28X U-bolt kit before installation, then check the driveline angle once the yoke is in place.
What’s included
Only the yoke is described. Hardware is not included, and the D/S2-94-28X U-bolt kit is needed separately.









