Drivetrain› Drive Shafts and Components
USA Standard (Yukon)
USA Standard axle shaft for ft80-ft90 4WD GM truck. 31 1/2in 28 spline.
SKU: U018 ZA G14039547
Beginner — under 30 min
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | USA Standard (Yukon) |
| Part Number | U018 ZA G14039547 |
Videos
Yukon Gear vs USA Standard Gear Axles
GM 8.5 10 bolt gear setup and final assembly
88-98 GM 10 Bolt 4.88 Gear Instal
Gear Ratios 101: What's better? 3.73 or 4.10? | A Simple Breakdown w/ Driving Examples
How-to Install a Spartan Locker in a GM 8.5 10-Bolt (No Gear Reset Needed)
No BS GM 8.5/8.6 10 Bolt Ring and pinion gear install axle setup
WE INSTALLED A YUKON POSI & 4.11 GEARS ON MY CHEVY SILVERADO!
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy