ICON K78303 Stage 3 Suspension System 6-8" GMC Sierra/Chevrolet Silverado 2500/3500 11-16

overview

The ICON 2011-2016 Chevy/GMC 2500HD/3500 6-8" Stage 3 Torsion Relocation Suspension System is our top-level system - engineered to offer superior ride quality, performance, component protection, increase suspension travel, and reliability all in one complete package. With over a year of development and testing our suspension system is sure to perform with the best on or off-road handling and drivability. Included in this lift kit are components and features such as a heavy duty boxed sub-frame with integrated differential and transmission skid plates, precision CNC machined cast iron spindle knuckles, adjustable lift height, V.S. 2.5 Aluminum Series shocks front & rear, rear lift blocks w/ built in bump stops, Delta Joint upper control arms, and torsion bar relocation brackets. ICON's Torsion Relocation System allows the factory torsion bar to remain in the factory location giving the center of the vehicle maximum ground clearance. The Stage 3 GM 2500HD/3500 6-8" system adds ICON tubular steel upper control arms which increase the front suspension travel, giving you superior overall performance & handling compared to any other available suspension.

This system features upper control arms with ICON's patented Delta Joint. The Delta Joint is a heavy-duty high angle ball joint that combines the durability of a ball joint with the performance characteristics of a traditional uniball. While the industry standard uniball does a great job of allowing the control arms of a vehicle to articulate with little bind, they do have an inherent weakness that leaves more to be desired when used in a daily driven application - exposure to the elements. The Delta Joint features a zinc plated housing providing the first layer of corrosion resistance, while a tough grease seal keeps potentially harmful elements out of the inner workings of the joint. Metal on metal construction and a greaseable design increase the longevity of the Delta Joint while at the same time allowing for noise-free operation. What makes the Delta Joint unique is that it brings the best of both worlds to ICON upper control arms with features that make it more robust than a uniball, and at the same time capable of greater angularity than a typical ball joint.

features & Benefits

• Heavy duty boxed sub-frame with integrated diff and transmission skid plates
• Complies with GM Stabilitrak system
• ICON high quality fit, appearance and improved suspension function
• Retains factory track width when high offset wheels are used
• Lifetime warranty on ICON fabricated non-serviceable components
• Precision CNC machined cast iron spindle knuckles
• Includes ICON torsion relocation brackets to keep torsion bars in the factory location
• Fits 2WD & 4WD models
• 6-8” adjustable lift height
• Improved ground clearance
• 2.5 Aluminum Series front and rear shocks feature one-piece impact extruded aluminum cylinders for excellent corrosion resistance and consistent finish
• Tubular steel Delta Joint upper control arms
• Improved drivability and handling over stock

Tech Info:

• OEM Wheels & Tires Fitment: Yes
• Recommended Aftermarket Wheels: ICON Alloys | 18x9" w/ 5.50" Backspace / 12mm Offset
• Recommended Aftermarket Wheels: ICON Alloys | 20x9" w/ 5.50" Backspace / 12mm Offset
• Recommended Aftermarket Tires: 35" x 12.50" (Larger tires may fit but fender trimming and modifications will be required.)
• APPLICATION NOTE #49: 2WD MODELS MAY REQUIRE CARRIER BEARING DROP
• APPLICATION NOTE #51: 5” BLOCK AVAILABLE FOR LARGER LIFT HEIGHT SETTINGS
• APPLICATION NOTE #52: DRIVESHAFT RECOMMENDED FOR 2007 MODEL YEAR AND NEWER TRUCKS THAT WILL BE DRIVEN OVER 15 MPH IN 4WD. PART #78705 (ALISON TRANS.) OR PART #78706 (6L90 TRANS.) INSTALLATION OF DRIVESHAFT WILL ALSO REQUIRE SHIFT LINKAGE RELOCATION BRACKET, PART #78708
• APPLICATION NOTE #53: CARRIER BEARING (PART #78709) MAY NEED TO BE INSTALLED IF VIBRATION IS PRESENT ON TRUCKS WITH 2-PIECE DRIVESHAFT
• APPLICATION NOTE #55: SHOCKS ARE FULLY SERVICEABLE. COILOVER HEIGHTS INDICATED ARE FOR A STOCK EQUIPPED VEHICLE
• APPLICATION NOTE #65: NOT SOLD SEPARATELY, ONLY SOLD IN COMPLETE KIT FORM AS LISTED
• APPLICATION NOTE #75: U-BOLTS REQUIRE DRILLING OF FACTORY U-BOLT PLATE
• APPLICATION NOTE #76: NOT TO BE COMBINED WITH AFTERMARKET TORSION KEYS
• APPLICATION NOTE #106: 4” REAR LIFT BLOCKS INCLUDED IN BOX KIT
• Ships in multiple boxes

System Components:

• 174701 (QTY: 1) | 11-16 GM HD 6-8" SUBFRAME BRACKETS
• 174702 (QTY: 1) | 11-16 GM HD 6-8" SKID PLATE/DIFF/BLOCK/UBOLTS
• 174703 (QTY: 1) | 11-16 GM HD 6-8" STEERING KNUCKLES
• 78703 (QTY: 1) | 11-UP GM HD TORSION RELOCATOR KIT
• 78727 (QTY: 1) | 11-16 GM HD 6-8" 2.5 CDCV SHOCK SYSTEM W/ UCA
• 77727CP (QTY: 1) | 01-UP GM HD 6-8" REAR 2.5 VS PB CDCV PAIR