I just ordered parts to rebuild my kingpins from 4wdfactory.com -- including new upper and lower kingpins, rebuild kits, and new wheel bearings. The parts I was sent were manufactured by Yukon Gear and Axle as opposed to Dana Spicer (as the website had led me to believe).

I'm considering returning the parts and reordering genuine Spicer components. Do any of you have experience with or opinions on Yukon (as opposed to Spicer)?

TIA.

 

I would not worry about it.

Just grease them regularly.

If you pound out the nylon cups fast, you can switch to aftermarket bronze ones.