It's good for you and dosen't hurt the motor. The only way it could hurt the motor after it's done properly is it makes you keep the throttle pinned cause you can belive how much faster your bike is after it's been modded.
You can go any gear pinned with the cam mod if you want to. The cam mod just moves the power band . Makes more power sooner and keeps it longer and gives a couple of peak horses also.
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