Need a 4.56 pro gear, saw US Gear is making “Isotropic Finished” gear sets now. They’re all polished up and look good, but is worth the extra $ over a regular Pro gear?
Looks like the same kind of finish as Eagle’s “ESP Armor” finish on cranks.
Worth the extra ~$150 or not?

The isotropic finish to me is one of those things that on a single part you probably won't see much. Once you start doing more parts such as transmission gears, crank, etc.... it starts to add up to a measurable thing. Then you add ceramic differential and axle bearings and/or the blue coated bearings, piston coatings, low volume oil pumps. Each little thing just like saving weight slowly adds up to something you can quantify.

I have read where it can make setting up the gears a little more challenging because the marking compound doesn't stick to them as well.

Curtis

If you get extended service life and/or reduced friction I can see it being worth 150 bucks.

Isee it like having gear machined down to remove 3 or 4 lbs. Alone its worth nothing but add it to some other things as Curtis mentioned ceramic bearings and more weight savings its performance.

Now according to the bracket gurus performance wise no its not worth anything,so in that thinking service life would be determining factor. Does it live x amount of runs longer?