So the swing arm broke on my XC-604. It happened as I was riding on a rocky trail, luckily I wasn't injured.
About a year ago the front triangle broke at the rear shock mount. KHS warrantied the front triangle with a 2013 model. I was back on the trail in under 2 weeks.
So far it's been a week and my LBS hasn't heard back from KHS. I am hoping they come through and replace the swing arm.
Here's a pic of the carnage:
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