I have a 2012 4 door JK. I am putting together some Genright Parts and Motobuilt parts for an all new suspension system. After back and fourths with GR as to their cross member being a 1/4" too narrow they said one of their techs claimed to have worked on one frame that had that issue. They called it a deep dimble frame and to fill the gap with panels. I of course thought that was an odd statement but I made it work. I just test fit the Motobuilt cross member section and every bracket is also 1/4" short on width. Anyone ever heard of this?

 

hey, welcome to JKF! We have a new member special tonight......I was willing to go measure my frame width so you have something to compare to at least. With skids in place a little difficult, but i measured from inside of frame will to inside of frame wall right in front of the cross-member and I came up with 41".....maybe 41 1/8". It was not my best tape measure but the one I could squeeze through the tiny opening in a skid on the driver's side so I could get as straight a reading as possible. I'd have to think more likely a flawed production unit rather than you're entire frame is off from everyone else's. Curious to hear what yours measures.

 

Thanks, I'll measure I hope tonight. I agree it's odd that two completely separate companies have the same discrepancy.

 

Mine measured the same at 41". It's not an anomaly. Response from Motobuilt was the width is 40 3/4" and their expectation is the frame should be 40 7/8" so fill the gap with weld or in my case plate and weld. All my brackets so far are a lot more fitment time than expected. Probably mostly due to not wanting to fill 1/8" gaps with pure weld.

 

agree....i wouldn't want to do that either, nor feel like i should have to. IMO, your frame is the same as mine, and i bet the same as the next. That is BS to me. I've replaced my crossmemeber with a RockHard4x4 one (just cuz that was the skid system i already had and the price was reasonable) and it bolted right up with no issue. I am in a lot of threads and I can't recall anyone ever having an issue like what you're having....at least not that I have seen.

 

I put a Metacloak crossmember in mine and it bolted right up like it was supposed to also. Mine is a 2017 4 door. No issues whatsoever.

 

To clarify the front cross member from them fits. It's the new rear cross member that get's welded in that is short. The front links had areas with larger gaps that took quite a bit of slotting and shaping as well. I would imagine after burning in the rear I will have modification to do with the rear link mounts as well. I can get particular about fitment so I'm sure they will be time consuming as well. Since I am a hobbyist and not a mechanic, I can afford the time without losing money. Both companies also offered the idea of squeezing the frame but with my original cross member in place, I'm not sure it would move. I'll try and work on figuring how to load pictures to show gaps. I'm in early stages so I'm sure I will ask more questions shortly.

 

Since I'm new. Is it better to make an Album or post pics to a thread?