The clunch is one of the weak points of Jimny. I used to replace it very often (again with the stock one) because it was very easily burned.
I was searching for an aftermarket one but there was nothing.
After years I decided to buy a CENTERFORCE clunch kit for Suzuki Samurai.
It is produced in 2 types. One 30% stronger (this one I’ve used with no problems and hard use, till now) and one 90% stronger.
The only thing you have to do before you install it is to remove the hard wire with the leads.
CENTRFORCE
CENTERFORCE 2