The 2011–2019 Chevy Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD 2WD/4WD can be equipped with this 3.5" System, offering a lower lift than the 6" RTS™ system while still accommodating 33" or 35" tires (cutting required) for both street and off-road applications.
This system features replacement upper control arms constructed from 1.50" OD, .120" wall DOM tubing for increased strength and durability. These arms attach to heavy-duty Fabtech ductile iron steering knuckles engineered for proper suspension geometry. The factory torsion bars remain in their original location and use new forged adjusting keys to achieve the correct lift height.
This configuration levels the truck by eliminating the factory nose-down rake without altering the rear suspension. For customers who prefer the stock nose-down stance, optional 1" rear block kits are available (2500HD Part # FTS21110) and (3500HD Part # FTS21111).
