I'm saying if that is a 12" motor, it will move a pickup truck with ease. Its gonna be really hard to shoehorn that thing into a motorcycle frame, and its going to be massivly heavy. You might want it for a car project if that is something you're looking to do in the future. I wouldn't use it on a motorcycle though.
I just did some research on the motor's weight. Its not the same, but a Warp 11 motor weighs 225lbs. A Warp 13 weighs 367lbs. So, your 12" motor is gonna weigh in the high 200lbs range. That is not too far from the weight of a lightweight motorcycle itself!