Mono Tunning has released a threaded wheel axel set. It looks to be complete, since even the wheel nuts are in the pix. That would imply to me that they are included.
The decrption states they are heat treated and hardened. $14 with free shipping, but not certain if it will apply to my State.
I've used their extended arms on my Mini LST and would buy them again if I had the chance to pick up another Mini LST. The arms held up fine for me.
Mono Tunning also has a plastic 6 spoke yellow rim's on the way. They are supposed to be deciding on wether or not to wrap them in rubber or foam.
This is their site
www.monotuning.com
......and one pix