I dug out my Haynes manual: "Track Bar-to-Axle Bracket Nut.........74"
I thought that sounded bat-shite-crazy, I looked at the bolt again. It has 10.9 stamped into the head. The first bolt broke under the torque wrench, the second one is still working. I came to the conclusion the engineers specifying that was intentional.
Since I heard these are no longer available new, I have a handful of spares from the junkyard. I make sure to have a few in my trail spares when I go play.
I'd guess that's a typo or the metric torque in Nm rather than ft-lbs.