TheÂ CST 10" Stage 1 Lift Kit CSK-C3-16-8 provides a superior fit, function, and finish in your 2011-2016 GM 2500HD. Improved ride quality, O.E. steering geometry and O.E. track-width, just a few of the many reasons we are known as the reliable 2500HD Suspension Company. You could also say CST paved the way for sub-frame style lift kits, twenty years ago and long before the current trend. Fifteen years later, like the 2500HD CST lift kits are still evolving and still continue to uphold the CST reputation! The CSK-C3-16-8 kit includes front & rear lift components for a level stance at 9-10 inches of lift and four of our 100% rebuildable Dirt-Series 2.0 shocks! The CST Stage 1 10" kit for the 2011-16 2500HD includes a one-piece gusseted sub-frame with a steel full size differential skid plate, fabricated steel, CNC machined front steering knuckles, high strength steering drop center-link with heim jointed support links to minimize wear of the factory idler and pitman arms, differential drop brackets, heavy duty bump stop brackets, extended sway bar end links, brake lines & drop brackets, CST laser cut torsion x-member drop brackets and all of the necessary hardware.Â This 10 version of the 8-10 kit also includes a new extended length CV front drive-shaft, uni-ball upper arms and torsion keys! This kit will also include four of our Dirt-Series 2.0 shocks along with our soft-ride rear leaf springs, 3 fabricated rear lift blocks with bumpstop pads and zinc-plated u-bolts for 9.5 inches of rear lift! The U-Bolt Spring Plates save the hassle of pulling apart the OE leaf pack.Â Steering stabilizer brackets are built into the kit and the CST stabilizer shock kit can be purchased separately as an upgrade option. Cutting or modifying the front differential is not required. Our 8-10" lift kit retains the factory front wheel track width and has zero issues with the GM Stabilitrak system. All CST Sub-Frame style lift kits include a new center-link with heim supports off of the sub-frame to reduce wear and tear and add stability to the O.E. idler and pitman arms. Fabricated parts are covered in a high quality two stage gloss black powdercoat finish. No welding required. Steel braided D.O.T. approved brake lines.Â Â Wheel & Tire Guidelines:Â Most O.E. wheels and tires will work with the lift kit installed, some require wheel spacers. Wheels For Use With Oversized Tires: - 17 x 8" or 9" w/ 5 1/4" BSÂ - 18 x 9" w/ 5 1/4" BSÂ - 20 x 9" or 10" w/ 5 3/4" BSÂ (some higher offset wheels may work, test fitment required)Â Tire sizes for use on factory O.E. 20" wheels / spacers required on some models. - 37 x 12.50 (no trimming required at 8.5" of lift)Â - 38 x 13.50 or 14.50 (minor trimming required - must be set to 10" of lift) Features:Â 8-10" Adjustable Lift Height Improved Ground ClearanceÂ Proudly Made In The USA!Â Superior Quality, Ride, Fit & FinishÂ Constructed Of 1/4" Or Thicker Steel For Extreme Strength Â Notes - Please Read For Additional Info:Â All parts are required for 10" of lift.Â Fits diesel models only. Will not work on gas applications.Â Dual shock upgrade available for purchase separately. 17" wheels can't have more than 5 1/4" back-spacing. 20" or larger wheels can't have more than 5 3/4" back-spacing. 37" Tires with 12-14" wide wheels. Â 38" Tires with 9-10" wide wheels. Â 38" Tires with 10-12" wide wheels, trimming required.Â Some models may need additional rear lift components for truck to be completely level.Â Check rear drive-line lengthÂ Most 18" factory spare tires can be used.Â Steel braided D.O.T. approved brake lines.Â 3500HD Owners:Â This kit was designed and tested for the 2500HD trucks. It can be used on 3500HD and 3500HD Dually if the purchaser / installer is able to provide custom u-bolts for their application. Due to the many different spring and axle configurations, u-bolts are not included or offered for the 3500HD models. Neither XDP or CST offer u-bolts for these applications. You must be able to source them locally. Custom carrier bearing spacer may be required as well. Â Truck Freight Item: Allow 1-2 Weeks for delivery. Truck freight charges apply.