110 Dirt Bike

I wanted to know if I could change the engine on my Kazuma Viper 110 with better. Does anyone know if there is an engine that I could change that I have on board. I wanted a great brand like Honda, Kawasaki, Suzuki. they must be properly sized to fit a Viper 110 Kazuma. Thank you

Honda engines of the same design as the 110 ATC, which is what the Chinese copied to make these pit bikes and they copied cheaply with many internal parts, plastic can be removed and bolted right back in. It can also be updated with a 125cc cylinder itself, the head and cam.