Actually at least in the U. S. the K-Pipe does indeed have a clutch--two of them, in fact. The one on the crank allows it to come to a stop without having to find neutral or holding the clutch lever in and allows you to take off again by just twisting the throttle. Shifting is another deal and you have to use clutch #2 (disengaged like most motorcycles with the hand lever).
It's crank clutch setup is similar to the one on the Honda TRX-90 four wheeler. The one on the main shaft is a very conventional clutch similar to most bikes.
The K-Pipe has a lot going for it and you can't beat the price. I bought one in 2016 and I'm happy with my purchase.