I can't see a support strap on the exhaust pipe/muffler. Because it extends a long way back from the exhaust port, it will need a support. Just a U bracket around either pipe or muffler, as far back as possible, will be suitable.
This next point I'm sure you already know, but I have to say it: that machine has way too narrow a track to be operated on a cross slope. With those tiny front wheels, if you drop a front wheel into a wombat hole or whatever, it will roll for sure, and it is much too heavy a machine to hold up with the back of your neck. Quadriplegia is no fun, I'm told. Why not make a really stylish Roll-Over Protection System for it?
And it looks great, by the way.
