LIFT KIT | 2011-2018 GM 2500HD | 6-8" STAGE 1

Superior fit, function and finish. Improved ride quality, O.E. steering geometry, O.E. CV angles, O.E. track-width, that’s just a few of the many reasons we are known as the 2500HD guys. You could also say we paved the way for sub-frame style lift kits, twenty years ago and long before the current trend. Fifteen years later, like the 2500HD our lift kits are still evolving and still continue to uphold our reputation! This 6-8" kit uses a one piece sub-frame, fabricated steering knuckles, steering drop down and will retain the factory handling!

We've incorporated our experience in off road racing and trophy truck quality engineering to ensure that your suspension will have increased strength, performance, overall build integrity, and perform better than stock. Throughout the initial design and R&D process we made sure to retain the factory O.E. suspension geometry and design attributes!

Our standard 6-8" adjustable kit for the front end includes our 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 line drop brackets, CST laser cut torsion x-member drop brackets, all necessary hardware, and O.E. front shock extensions.

Steering stabilizer brackets are built into the kit and our stabilizer shock kit can be purchased as an upgrade option.

The rear kit includes fabricated 4" lift blocks with bump stop pads and heavy duty 3/4" zinc-plated u-bolts.

Extended length rear shocks are required, but sold separate*

No cutting of the front differential is required or welding of any kind. Our 6-8" lift kit retains the factory front wheel track width and has zero compatibility issues with the GM Stabilitrak system.

Recommended Tire and Wheel Specs:
(Factory OEM wheels AND tires will work with the lift kit installed)

Wheels for use with oversized tires -
17 x 8" or 9" w/ 5 1/4" BS
18 x 9" w/ 5 1/4" BS
20 x 9" or 10" w/ 5 3/4" BS
(some higher offset wheels may work....test fitment required)

Tire sizes for use on factory O.E. 20" or aftermarket wheels
35 x 12.50
37 x 12.50 or 13.50 (minor trimming required - must be set to 8 inches of lift)

With the superior design and superior quality you have come to expect from CST, this kit continues to be one of our most popular!

Kit Features

6-8" ADJUSTABLE LIFT HEIGHT.
ALL CST SUB-FRAME STYLE LIFT KITS INCLUDE A NEW CENTER-LINK WITH HEIM SUPPORTS OFF OF THE SUB-FRAME TO REDUCE WEAR & TEAR AND ADD STABILITY TO THE IDLER AND PITMAN ARMS!
OVERALL TRACK WIDTH REMAINS FACTORY!
CONSTRUCTED OF 1/4" OR THICKER STEEL FOR EXTREME STRENGTH!
NO GM STABILITRACK ISSUES!
ALL PARTS COVERED IN A HIGH QUALITY, TWO STAGE GLOSS BLACK POWDER COAT FINISH.
NO WELDING REQUIRED.
SPINDLES ARE CONSTRUCTED OF PRECISION LASER CUT 1/4 INCH OR THICKER STEEL WITH CNC MACHINED BALL JOINT TAPERS, AND THAN COMPLETELY MIG WELDED!
FACTORY SPARE TIRE CAN BE USED WITH 18" OR LARGER WHEELS.
QUALITY FIT, FUNCTION, AND APPEARANCE!
IMPROVED RIDE FROM FACTORY.
ABILITY TO BE PUT BACK TO STOCK.
ADDS GROUND CLEARANCE.
OPTIONAL FRONT STEERING STABILIZER.
MADE IN THE U.S.A.

Notes & Fitment

17" WHEELS MUST HAVE NO MORE THAN 5 1/4" BACK-SPACING.
20" OR LARGER WHEELS MUST NOT HAVE MORE THAN 5 3/4" BACK-SPACING.
REAR SHOCKS ARE REQUIRED & AVAILABLE FOR THIS KIT BUT ARE NOT INCLUDED.
SOME 3500 & 3500hd MODELS MAY NEED ADDITIONAL REAR LIFT COMPONENTS FOR TRUCK TO BE COMPLETELY LEVEL ASK YOUR DEALER FOR DETAILS.
Approved on 3500 Dually models, may require longer u-bolts than what is supplied in the kit.
THIS KIT WORKS IN CONJUCTION WITH THE GM STABILITRAK SYSTEM.
SHOCKS SOLD SEPARATE.
KIT USES FACTORY FRONT O.E. SHOCKS!
MAY REQUIRE CARRIER BEARING DROP.
KIT FITS 2011, 2012, 2013, 2014, 2015, 2016, 2017 & 2018 2500HD CHEVY AND GMC TRUCKS!

Optional / UPGRADE Parts

OPCSK-C13-3 | FORGED TORSION KEYS (REQ. FOR 8" OF LIFT)

OPCSS-C33-4 | SINGLE (FRONT) SHOCK BRACKETS
OPCSR-6521B | CST DIRT-SERIES FRONT SHOCK 2.0 RES. (2 REQUIRED / ORDER WITH CSS-C33-4)

OPCSS-C5-6 | DUAL FRONT SHOCK BRACKETS (REQUIRES 2 OF EACH OF THE FOLLOWING / OPCSR-6521 & OPCSR-6522) - ORDER OPCSS-C5-7 INSTEAD OF CSTCSS-C5-6 FOR BLACK BILLET CLAMPS!
OPCSR-6521 | DIRT-SERIES FRONT SHOCK 2.0 RES. (STOCK LOCATION)
OPCSR-6522 | DIRT-SERIES FRONT SHOCK 2.0 RES. (DUAL LOCATION)

OPCSR-6526 | DIRT-SERIES REAR SHOCK 2.0 W/ RESERVOIR (2011-2018 6-8")
OPCSR-2500 | CST PERFORMANCE SERIES REAR SHOCK (2011-2018 6-8")
OPCSR-A27-1 | BILLET RES. CLAMPS (ORDER 1 PER SHOCK)
OPCSR-A27-2 | BILLET (BLACK) RES. CLAMPS (ORDER 1 PER SHOCK)
OPCSR-2946 | CST PERFORMANCE STEERING STABALIZER (FITS 6-8" & 8-10" KITS)
OPCSS-C2-10 | CST DIRT-SERIES UNI-BALL UPPER ARMS (CLOSED CUP)
OPCSS-C28-3 | 2011-2016 2500HD CARRIER BEARING SPACER
OPCSL-C19-1 | 6.5" REAR LEAF SPRINGS (PAIR - REQUIRES ADDITIONAL PARTS)
OPCSB-C14-7 | 1" BLOCK & SPRING PLATE KIT (REQUIRED W/ LEAF SPRINGS)
OPCSU-C15-11HD | REAR U-BOLT KIT (REQUIRED W/ LEAF SPRINGS)
OPCSP-C28-1 | (4WD) CV FRONT DRIVESHAFT (REQUIRES SHIFT LINKAGE)
OPCSS-C22-8 | SHIFT LINKAGE BRACKET 2011-2015 HD 4WD
OPCSS-C24-16 | CST GEN III EXTREME-DUTY TIE-RODS
OPCSS-C29-15 | ALUMINUM SKID PLATE W/ CST LOGO (2011-18 HD W/ 6-8" LIFT)
OPCSTCSS-C29-16 | D.E.F. SKID PLATE

ADDITIONAL KIT NUMBERS AVAILABLE THRU DISTRIBUTORS

Stage One 6-8” | OPCSK-C3-15-1 | NO SHOCKS, INCLUDES BRACKETS TO RE-USE O.E. FRONT SHOCKS. REAR SHOCKS CAN BE PURCHASED SEPARATELY.

Stage Two 6-8” | OPCSK-C3-15-2 | INCLUDES BRACKETS TO RE-USE O.E. FRONT SHOCKS, ALSO INCLUDES CST MONO-TUBE STREET-SERIES REAR SHOCKS.

Stage Three 6-8” | OPCSK-C3-15-3 | KIT INCLUDES 4 CST DIRT-SERIES 2.0 EMULSION SHOCKS (NON RESERVOIR) AND FRONT SINGLE 2.0 SHOCK MOUNTS.

Stage Four 6-8” | OPCSK-C3-15-4 | KIT INCLUDES 4 CST DIRT-SERIES 2.0 RESERVOIR SHOCKS AND FRONT 2.0 SINGLE SHOCK MOUNTS.

Stage Five 6-8” | OPCSK-C3-15-6 | KIT INCLUDES 6 CST DIRT-SERIES 2.0 RESERVOIR SHOCKS AND FRONT 2.0 DUAL SHOCK MOUNTS.

OVPRO #: OPCSK-C3-15-1