Originally Posted by SheWolf
No it won't. I've had the 12 on mine for quite a while, no swingarm chew AT ALL. Chain tension is key here, not the sprocket.
Your bike has also been lowered quite a bit. Don't you think your swingarm might be at a different angle than OEM, thus changing the whole 'swingarm chew' equation.
Also, how much do you weigh soaking wet, tiny one?!