Our 6" Basic System has been designed utilizing our industry leading crossmember and spindle technology. Lift is accomplished by utilizing the factory front Coilover shocks with steel spacers that helps retain the stock ride of the front suspension. Extensive design work was given to the extended length steering knuckles to keep track width near stock and working properly with the Stablitrac? safety functions. The front differential is relocated with heavy duty brackets while a tightly formed 1/4 " thick steel skid plate provides protection for offroad use. The rear suspension is upgraded with add a leafs and 5" tall blocks and u bolts. The stock rear shocks are replaced with Stealth Shocks for increase dampening. - Front lower control arm Crossmember forms to bottom of frame without cutting Offset ductile Steering Knuckles keep tires under fenders Includes Crossmember cross tubes to distribute front suspension impact loads No disassembly of factory coilover assembly required for installation Systems compatible with factory Stablitrac.. Fabtechs development capabilities are second to none with over 20 years of experience in aftermarket suspension design. State of the art software, fabrication equipment along with our seasoned engineers and fabricators allow the company to develop products that are constantly on the cutting edge. Fabtech has received numerous awards for our designs that continue to lead the market. Proper design in suspension development is key in providing a quality, trouble free product to the end consumer. Fabtech leads the industry with extensive research, design technology and rigorous testing that results in the highest performing, finest quality suspension system for the discerning offroad enthusiast.. TIRE SIZE - 35/12.50R17 WHEEL - 17X8 W/5" BS W/MINOR TRIMMING; TIRE SIZE - 35/12.50R20 WHEEL - 20X9 W/5" BS W/MINOR TRIMMING; TIRE SIZE - 325/65R18 WHEEL - 18X9 W/5" BS W/MINOR TRIMMING; 1. WILL NOT FIT MODELS WITH FACTORY AUTORIDE SHOCKS.; 8. WILL NOT FIT ALL WHEEL DRIVE MODELS.; 14. CAN NOT USE OEM WHEEL AND TIRE.; 17. DOES NOT FIT STANDARD CAB.; 127. FITS MODELS WITH FACTORY FORGED SILVER ALUMINUM UCA OR STAMPED BLACK STEEL UCA.. Fabtech 14-18 GM K1500 w/OE Alum. UCA 6in Basic System w/Stealth Shocks. 6" BASIC SYS W/ STEALTH 14-18 GM K1500 P/U W/ OE ALM OR STMP STL UCA. 6in. BASIC SYS W/STEALTH 14-18 GM K1500 P/U W/OE ALM OR STMP STL UCA. 6in. BASIC SYS W/STEALTH 2014 GM K1500 P/U W/ALUM SUSP. 6" BASIC SYS W/ STEA. 6in. BASIC SYS W/STE. Suspension Lift Kit

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