Motorcycle Engines
These are the most versatile engines for use on Karts and Off-Road vehicles. With their gearbox and clutches they require little messing around with to suit a Kart. However these are not easily come by, but for the fortunate few you're in luck!. Whether it is a two-stroke or a four, small or big, it still is the best option.
As you can see from the last picture above this is how it should turn out. The samll driver sprocket is hidden in this picture by the flywheel cover. You can see the rear sprocket and it's mounting plate. That's how easy it turns out to be.