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Grade 8 Bolt Kit Question

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Old 06-26-2013, 12:46 PM
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Originally Posted by 09JK2DRRUB
I noticed Northridge's bolt kit is for lower arms only and Synergy has kits for lower, upper, or both. Why would I not want to replace all of them?
I'm about to try installing mine and I'm curious about this as well
Old 06-26-2013, 03:07 PM
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Originally Posted by flomingo
I'm about to try installing mine and I'm curious about this as well
I am not sure either. Maybe in time NR with come out with an kit for the uppers. I bought the synergy UCA kit and NR kit when I did my lift and swaped out trackbars and control arms. Piece of mine for down the road
Old 02-10-2014, 10:10 AM
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Just figured I would bring this back up and ask the same question again since it wasn't really answered.


Sooooooooo, the Northridge bolt kit is just for the lower control arms and track bars. Any reason not to replace the upper's bolts with grade 8 9/16 units too?
Old 02-10-2014, 10:15 AM
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Originally Posted by olyelr
Just figured I would bring this back up and ask the same question again since it wasn't really answered. Sooooooooo, the Northridge bolt kit is just for the lower control arms and track bars. Any reason not to replace the upper's bolts with grade 8 9/16 units too?
Synergy has a kit. I can't imagine you'd get them in for the front of the rear uppers. I hate taking those out. Super long tab on those. The load on the front uppers isn't as much as the other arms and they're smaller bolts. I guess the logic is partly ease of replacement for the lowers and track bars.

The bolts are well worth the investment though.
Old 02-10-2014, 10:23 AM
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Originally Posted by Invest2m4
Synergy has a kit. I can't imagine you'd get them in for the front of the rear uppers. I hate taking those out. Super long tab on those. The load on the front uppers isn't as much as the other arms and they're smaller bolts. I guess the logic is partly ease of replacement for the lowers and track bars.

The bolts are well worth the investment though.

Thanks for the reply, fellow Michigander.

I have the NR bolt kit already. Just will be installing my RK kit soon, and wondering if I should get them for the uppers while Im there or not bother.
Old 02-10-2014, 10:41 AM
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Originally Posted by flomingo

I'm about to try installing mine and I'm curious about this as well
I've been told grade 8 for lowers because they take more abuse than upper arms. ( NR kit ) hmm



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