F10 Portal Rear Stub Shafts: Installation FAQ

Quick Answer

For a trouble-free install, verify your axle version, use the correct bearings and shims, and torque the stub shaft nut to spec—no special tools are required beyond standard hex drivers.

Installation Q&A

Do the F10 Portal Rear Stub Shafts fit all VS4-10 models?

They are listed for VS4-10 Phoenix, Pro, and Ultra. If you have a different VS4-10 variant, double-check the axle parts list for your specific model.

What tools do I need for the install?

Standard hex drivers (2.0mm and 2.5mm), a pick or magnet for small parts, and a torque wrench if you want to follow the factory torque spec.

Do I need to remove the portal cover to access the stub shaft?

Yes, you'll need to remove the portal cover to access the stub shaft and its retaining hardware. Keep the cover screws organized. Take a photo before disassembly to remember screw positions.

How tight should the stub shaft nut be?

Tighten to the factory torque spec if you have a torque wrench; otherwise, snug it firmly but avoid over-tightening, which can bind the bearing. Check for smooth rotation after tightening.

Can I reuse the old bearings and shims?

Reuse them if they are in good condition, but inspect for wear or damage. Replace any worn parts to prevent play or binding. Keep a spare bearing kit on hand for future maintenance.

Should I apply threadlocker to the stub shaft hardware?

Yes, use a medium-strength threadlocker on the retaining hardware to prevent it from backing out during runs. Let the threadlocker cure fully before running the rig.

Product Facts

• F10 Portal Rear Stub Shafts: The F10 Portal Rear Stub Shafts (Standard, VPS08613) are replacement parts for the VS4-10 family, including Phoenix, Pro, and Ultra. This confirms compatibility with your VS4-10, so you can order with confidence if you own one of those models.