Fits: 2001-2010 GM LB7, LBZ,2500/3500HD w/ 6.6L Duramax (will not fit Dually)

This ZONC31N is a new addition to the Adventure Series lineup of lift systems and is built around the Zone Offroad heavy-duty replacement upper control arms already available for the 01-10 HD trucks.  The arms are made from 3/16” steel that is precision laser cut, formed and fully welded.  Preinstalled Raybestos brand ball joints and rubber bushings provide easy installation and long service life. 

The ball joint is repositioned to compensate for the added lift and maintain a neutral position at ride height.  To complement the improved upper ball joint angles, the kit address the other area often ignored at this lift height – the CV shafts. 

The new Adventure Series kit for the 01-10 HDs includes a full differential drop system that relocates the differential down 2” for near stock angles at the 3” lift height.  This is accomplished with a drop spacer on the passenger’s side, (2) drop brackets for the front driver’s mount and an integrated “half cross member” for the driver’s rear mount.  A new different skid plate is included to protect the differential in its new position.  The rear is lifted via a 2” block and u-bolts.  Front and rear shocks are included and can be upgraded to Nitro versions.

Critical Fitment Note

RPO code must be verified to order the correct kit – this covers the factory torsion key differences.

RPO codes are located in the glove box – match one of the following in order to determine kit

RPO Number: FT2, FT3, FT4, FT5, FT6 or FT7

Notes: Please note that a Frame Bracket Mount modification and a Torsion Bar unloading/loading tool are required when installing this kit. 

Tire/Wheel Fitment: 33x12.50 on 17x9 w/ 5" Backspacing. Minor Trimming may be required depending on the model of truck.