My MT-03 has done about 8200 miles and the cush drive is knackered, along with the sprocket carrier bearing, final drive chain and possibly the sprockets themselves. Hmmm. I'm not a viscious rider and I do maintain things. However, I am the 2nd owner and I suspect these may be the original items which have received unknown levels of care. Once I replace the bits, I will log how things fare in their deterioration. Must admit at this point the life-expentancy of this bike is short as it is rotting away faster than my 20 year old SRX400 so I wonder what will drop off next.