On the maxx I've only had persistent trouble w/ the front lower arms (bulkheads are another topic)...you have to do something outstanding to crack the rears (upper and lower).

As for bending CVD's (MIP) in a big impact, I haven't seen that yet. I run stock arms on all four corners. This weekend I was runnin' 30+ on the back stretch, around a corner, and off a tabletop...right into a vertical steel post (its there to hold up the meshing which prevents cars from flying into the stands).

Busted lower and upper drivers side arms and steering drag link. Needless to say I was quite pleased at the minimal damage...and hope that's a result of the "break points" I'm leaving on the truck.

If the Flextek can handle that w/o passing on enough force to break the harder to replace components, bulkheads, skidplates, and chassis parts...then w00t. Though if the Flextek arms themselves broke...that'd be an $80+ hit to replace upper and lower.

I'm curious about the RPM's and how they (and other components) will wear over time. I would not consider RPM's a good solution if using them simply means breaking other stuff. My son has a pair on the front of his maxx...so we'll see how it goes over time.