Where can i get dirt bike engines?

Question

where or what website can i get a dirtbike engine for my go-kart i want the engine to be able to atleast go 40-65-70 mph

Answer 1

Ebay there is always someone parting out a bike. Or a cycle salvage yard. Most Go cart racers buy the carts with the engines or buy a new bike and sell the chassis and parts. They make carting engines Ive seen many on ebay and at carting shops.

Answer 2

Your local salvage yard, motorcycle repair shops have motors on the shelves or ebay.......