Seller notes

4 Inch Lift Kit 2011-2013 GM 2500HD/3500HD W/ Dirt Logic Shocks FABTECH 4” Ultimate System provides less lift than our 6” RTS™ system but still allows use of 35” tall tires for street and offroad use. We have developed this system utilizing replacement upper control arms constructed of 1.50” OD .120” thick wall DOM tubing that attaches to heavy duty Fabtech ductile iron steering knuckles. The factory torsion bars remain in the stock position and use new forged adjusting keys to provi...

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