Well the factory piston won't turn but 8500 before it comes apart but it won't build any noticeable power over 6500.
There's not a different redline in every gear. Just one rpm redline.
Your factory motor and my built motors are going to act completely different considering mine is still building power up to 10,000rpm. And all of my internals will run to 11,500. It's all in the build of the motor and you knowing your machine.