ORIGINAL: rotzilla
i dont know, maybe its just me but if you run metal to metal then add in dirt i dont care what grade of metal it is it will wear our with out a problem. i know grease and oil attracts dirt and keeps it there but thats what maintenence is for......
i know what your saying, but the metal quality used by mugen is much bteer then that used by HPI, so even with metal on metal contact the mugen parts will last much longer....