The all new RTS (Raised Torsion Suspension) system utilizes patent pending torsion bar brackets that keep the torsion bars raised up, in the stock location. This feature provides superior ground clearance at the frame as there is no torsion bars hanging down to become high centered on or damaged when offroading. The RTS system has been designed with unitized bracketry reducing the installation time and providing increased strength. Our signature high arched crossmembers are constructed of 1/4in thick steel and feature tubular cross braces with a 1/4in thick steel front differential skid plate. The construction of the crossmembers, using 1/4in thick steel, is an important part of this system. Only 1/4in thick steel provides the rigidity and strength necessary to relocate the torsion bars, bump stops and lower control arms properly. Fabtech has performed rigorous on and offroad testing of this new RTS system to establish the proper bump stop engagement, torsion bar location and shock valving for a superior performing suspension system. This industry leading system rewrites how an IFS suspension system should function for ultimate offroad use with great highway manners.. Fabtechs cutting edge RTS(TM) system has now been developed for the all new GM HD platform. The 6 RTS(TM) utilizes a patent pending bracket system that keep the torsion bars raised up, in the stock location. This feature provides superior ground clearance at the frame as there are no torsion bars hanging down to become high centered on or damaged when offroading.. The 6 RTS(TM) system has been designed with unitized bracketry to retain the four front compression stops of the vehicle as GM intended. This distributes impact loads across a wide section of the frame rather than at a single point.High arched crossmembers and front differential skid plate are constructed of 1/4 thick steel to resist bending from hard front suspension impacts. Only 1/4 thick steel provides the rigidity and strength necessary to relocate the torsion bars, bump stops and lower control arms properly. Minimal heavy duty bracketry allow for a fast installation time with only two holes to drill and no cutting of the front diff housing. The 6 RTS(TM) system allows the use of both 18 and 20 diameter wheels.. TIRE SIZE - 35/12.50R20 WHEEL - 20X8.5 W/4 3/4" BS W/MINOR TRIMMING; TIRE SIZE - 315/70R17 WHEEL - 17X8 W/4 5/8" BS W/MINOR TRIMMING; TIRE SIZE - 315/75R16 WHEEL - 16X8 W/4 5/8" BS W/MINOR TRIMMING; TIRE SIZE - 325/65R18 WHEEL - 18X8 W/5" BS W/MINOR TRIMMING; 4. LARGER TIRES CANNOT BE INSTALLED ON OEM WHEELS.; 12. DOES NOT FIT MODELS WITH QUADRASTEER.; 15. WILL EXPERIENCE SOME LOSS OF TURNING RADIUS.; 50. INSTALLATION REQUIRES WELDING.. Fabtech 01-10 GM C/K2500HD C/K3500HD 6in RTS System w/Perf. Shocks. 6in. RTS SYS W/PERF SHKS 01-10 GM C/K2500HD; C/K3500HD. 6" RTS SYS W/PERF SHKS 01-10 GM C/K2500HD, C/K3500HD. 6" RTS SYS W/PERF SH. Suspension Lift Kit. 6in. RTS SYS W/PERF

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