I had the same concern on the axels and received feedback that folks had been running for years without issue. Guess I'll find out with some mileage. As far as road noise it's nonexistent. No difference between the Terra Grapplers and the Ridge Grapplers.
I just lifted my 2016 TRD Pro using 2010-2016 Toyota 4 Runner 4WD 3" lift kit 809H | BDS Suspension I Only used the top spacers, Springs and SwayBar links.
You can see more images pre and post lift here Toyota 4Runner Forum - Largest 4Runner Forum - JT-TRDPRO's Album: Pre/Post Lift
I just lifted my 2016 TRD Pro using 2010-2016 Toyota 4 Runner 4WD 3" lift kit 809H | BDS Suspension I Only used the top spacers, Springs and SwayBar links.
You can see more images pre and post lift here Toyota 4Runner Forum - Largest 4Runner Forum - JT-TRDPRO's Album: Pre/Post Lift
Just Lifted
I just lifted my 2016 TRD Pro using the top spacers and springs from this kit 2010-2016 Toyota 4 Runner 4WD 3" lift kit 809H | BDS Suspension
Also went from the stock 265/70/17 Terra Grapplers to 285/70/17 Ridge Grapplers on the factory TRD black wheels.
Shocks and struts left in...
before and after
Did anyone have some before and after images after installation of this kit?
https://toyteclifts.3dcartstores.com/mobile/Toytec-lift-kit-for-TRD-Pro-4Runners-2014-Ultimate-Edition-FJ-Cruisers_p_1438.html