My sons clutch on his MB80 w/stock motor has always been noisy.

[cpu77]

We have a MB80 with a noisy clutch kind of a scratchy sound. Our MB11 is quiet while idling. The MB80 has done it since new. I have taken it apart and cleaned & lubed it. Didn't make a difference. I was thinking of replacing the clutch. Would the modified clutch make a difference over their upgraded standard stall speed clutch?

Modified 5/8 11t clutch From Hot Rod Mini Bikes
Modified 5/8" 11t clutch

 

[cpu77]

Hey guys I bought a new Max Torque clutch with a higher stall speed from Hotrod minibikes. It is quetier and fits the shaft much better. I can't tell a difference though with the higher stall speed. Just a FYI. WE are running a PMR jackshaft as well.

 

[buckeye]

Cool ya found a solution.