very new to this motorbike thing with a few questions
I recieved one as a gift BUT been wanting to build one. I have no idea in this field but been playing around with cars and engine for awhile. My question is " how do I find out what displacement is my engine" and " how can I make this a little faster because im a heavy guy". What are the aftermarket parts that add a little speed or should I change to a bigger engine? Help would be greatly appreaciated. Thanks.