<span>i would say its like a 125cc engine so 50mph 45-55 mph if cart no more than 250 lb.s -m This is wrong. I have a 11 hp go kart and it is 388cc and so it goes alot faster. well engines have so many rpms so the size does not matter but you can gear a bigger engine to make it go faster</span>
What is the cc... beacause the cc's also need to be known to calculate the speed... if it's around 125cc then it can go up to 45-55 mph... hope this helps