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Rear U-bolt torque spec?

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Many from this forum have ordered custom made grade 8 u-bolts from Boise Spring Works out of Boise Idaho. I believe they said they cost them around $45 shipped and they arrived pretty quickly. They have torqued them to 120 ft/lb with no issues.


Give them a call, (208) 377-1157.

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  • 1 year later...

These are the torque specs I used on my 2014

1500 when I installed my 2.5” kit. Worked great for me and have had no issues, just be sure to recheck and re-torque after you drive some and everything settles. 


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  • 5 months later...

So... if I used the supplied MotoFab u bolts and torqued them to 120... even though spec is to 55 and then 130 degrees..... is that bad? is something horrible going to happen over time? 


I have a nearly perfect memory, and I know that when we did my buddy's truck in 2014 that the instructions to his kit said to torque to 120, so that is what I did on mine in 2020.  

Edited by AJ Sullivan
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  • 2 years later...

Torqued my motofab 2” rear lift block with new ubolts to 100 ft lb. Have driven 1500miles and recheck torque. Were still at 100ft lb. 

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