Turbo R power exposes weak points fast, and stock axles are usually first to go. Rhino 2.0 Axles are built to handle that load with stronger materials, larger shafts, and better heat control under stress.
This is the level where you stop worrying about snapping an axle every time you get aggressive. More strength where it matters, better performance at high articulation, and durability that actually matches how the Turbo R gets driven.