It's important which axles you buy if you go aftermarket!
I lifted with all around AC coils on my '98 Qx4. Took it on a wheeling trip after the lift + tires (before it really settled on the lift btw). OEM stock CV boots were SHREDDED after that.
So I kept those axles thinking about rebooting for a trail set (have not done this yet and it's been many months lol). To replace the axles I went with O'Reilly CVs because they have the closest store to me. The axles fit, but I busted the boots within a few weeks, which included several hundred road miles and some light dirt roads. I got the axles swapped under warranty and put in the same brand thinking maybe it was just a bad set of axles. It was not, the brand (Import Direct) is just crappy and not up to what we use these rigs for.
Now i got the AutoZone axles (Duralast). I wish i took pics to compare the two, but here is a quick summary.
After a wheeling trip with the Second set Import Direct axles, which included some mud pit adventures-
the axles were corroding. I left the mud on there for a day or two before washing the car off. But this is a Cali car, no salt on roads, very little water besides the mud pit. This was a little more than just surface corrosion, it had turned a rusty color and the surface of the hubs was super rough! they looked super gross honestly lol
Obviously torn boots, which is the main reason i was swapping them
limited 1 year warranty
Compare this to the Duralast axles
autozone lifetime warranty (automatically makes it worth it in my opinion)
the axles were physically heavier and beefier in literally every aspect, from the inside hub, to the center shaft, to the outer hub. Significant weight difference, I am thinking around 5 pounds per axle (total guess, but the weight difference was significant!). But heavier in a good way, solid built
material quality was better. the boots themselves feeling like nicer rubber, with more riffles. The hubs were bigger and higher quality metal, with what looked like better heat treating spots. as soon as i pulled them out of the box I knew they'd last longer.
They were a little harder to install, slightly bigger size made the fit a little tighter, but still very doable.
it's only been a few hundred miles, 99% road miles. But i went and checked the boots before this post and they are absolutely fine. They still feel nice and no tears.
there is more stability with the front end steering and I can tell it rolls a little more solid because of the extra weight and size. Again, good changes in my opinion.
Note: if i say hub in this post i mean the big ends of the axle, not actual manual locking hubs (which i do not have). I do not know the exact name for this part of the axle lol.
cost difference, the Import Direct axles are $80-$90 (each), and the autozone ones are like +$25 or so compared to those. Honestly, after holding both of the axles in my hands and comparing them, I'd say it is VERY worth the minor price difference. If the boots rip on me soon, I will check back to this post and let y'all know