Judging by it's elusiveness, I'm doubtful the item actually exists for our bikes.
Chaparral Racing lists it as available for the 2012 WR250R, and someone linked to it in the "Swingarm Eaten By Chain" sticky thread a year ago. I'm just curious if anyone went for it and ordered one. It's not shown on Motorcycle-Superstore, or Rocky Mountain ATV... which tells me it's a typo.
I'd love a cheaper alternative to OEM, since it appears to be a yearly maintenance item.