Giant do tend to go for the larger diameter tubing for stiffness, at the expense of wall thickness.... but I've never heard any complaints about the Reign. I've flogged the hell out of mine on our steep rocky XC and lift serviced DH. All we've got here in Colorado are rocks. So far it is holding up better than the Turner that it replaced. But you know, maybe I've just been lucky this season.artsn said:I though the reign was a 5.6 in bike not 6 in. Don't get me wrong they are nice rigs, I have some saddle time on one. Ask any of your buddies who are shop rats they dent EASY. I myself actually dented a VT1 fairly badly on a honest to goodness not so burly ride. Got back to the trailhead and looked down at the toptube and to my dismay a quarter size dent. I ride alot in the rocks( socal), but this was not a dh trail by any means. It's not a big deal they make really nice bikes for the money.