I replaced mine right before I went to the Gap. It was the stock DID and it had 23,500 on it. It went from a leaking o-ring to 5 kinks in about 300 miles. The sprockets looked surprisingly good, but the rear was showing some wear.
That is the most mileage that I've ever gotten out out of a chain.

If it ran out of adjustment, that sounds like it had extra links, making the chain too long to begin with. My chain didn't stretch very far according to the adjustment marks, but it wore unevenly. Several links got a red stain, it kinked more often, and had large differences between the tightest and loosest sections.

I have heard of touring riders getting insane mileage (30k+) out of a chain, but I can only assume the bike rode like shit for so long they simply got used to it. Even a small amount of slop is noticeable to me. I adjusted the chain last week after washing the bike and cleaning the chain. It was just outside the loose end of spec- took two flats on the adjustor nuts to bring it back to the tighter side. I can't imagine using up all the adjustment on the swingarm.

I agree with that! I can't imagine a chain gaining that almost 2'' on the adjusters. That just sounds like a lot to me.

My chain on the Zuk lasted me all 5 years I had it. Plus I have no idea how long it was on there to begin with. Proper maintenence FTW.

That and ultra low mileage...:lol:

You're so funny.

On my 250 the chain lasted about 20,000 miles. It was easy to tell it needed to be changed. When it was up on the center stand, I would check the play in the chain then spin the rear tire a little then check again. It was loose at some spots and tight at others. Knew it had to go.

I was fastidious about cleaning and lubing the chain on my 04 GSX-R750....didn't replace the chain or the sprockets in the 3 years I owned that bike as there were no obvious signs of wear.

The M109-R has shaft drive...and to be honest, I'm in no real hurry to ever go back to chain drive. :idk:

21k MILES outta my OE sprockets, 2nd set about that long too, on 3rd set right now.

OE chains will last a long time, many miles if taken care of. They are really heavy duty...where as after market chains are lighter and might not be as "durable"

Check for "Play" in your chain, and if it is past the adjustment span in your rear swingarm...change it out.