This is the clutch assembly for Motovox MBX10 and MBX11 Mini Bikes. Comes complete with the 11-tooth front sprocket.
Mini bike clutches are not very complex systems. The Motovox MBX10 and MBX11 use this very simple but durable mini bike centrifugal clutch to transfer power from the engine to the belt or drive chain. Replacement mini bike clutch parts and assemblies for mini bike engines are therefore neither complicated nor expensive.
The clutch includes the key, the key way should be built into the shaft itself.
Is it possible to interchange a 9 or 10 tooth sprocket on this clutch? If so, do you carry a 9T or 10T that would work for this and a #35 chain?
While it may be possible to change out the sprocket on this clutch, we only carry this clutch as a whole assembly and thus are unable to guarantee compatibility with another sprocket. We sadly do not carry a 9- or 10-tooth version of this #35 chain sprocket to use with this clutch.