A- why is this a thread
B- hollow axles are the worst idea ever... do you want to bend your hangers that bad?
A-It's a completely free internet message board about skateboarding.
B-They use a better grade steel on the hollow axles and kingpins.
C-Way to try and sound too cool for a simple question, fucko. You sure are fishing for respect.
But to get back to the question, I've ridden the Thunder version and it all felt fine. No complaints, but I didn't see a huge difference in the way they skated.