CST 4-6" STL Stage 3 Suspension System w/ Fox 2.0 IFP Shocks — 11-19 Chevy / GMC HD 2500HD/3500HD 2WD/4WD
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
A true 4" of high-clearance lift in the stock torsion location — up to 6" with torsion keys — for 2011–2019 Chevy Silverado / GMC Sierra 2500HD, 3500 & 3500 Dually (2WD & 4WD). Maximum ground clearance while keeping the stock ride and handling.
What this stage includes
- Gusseted, fully-boxed high-clearance cross-members with a full-size steel diff skid plate
- US-made cast-iron CNC-machined steering knuckles
- Diff-drop, bump-stop, and brake-line drop brackets
- Extended sway-bar end links and built-in stabilizer brackets
- Billet 1" rear lift blocks, HD zinc-plated U-bolts, and all hardware
- Plus Fox 2.0 IFP front and rear shocks
Why CST
- TRUE 4" lift without dropping the factory torsion cross-member
- Near-factory track width and StabiliTrak-approved
- 1/4"+ steel, built in-house by CST in the USA — no cutting or welding, reversible to stock
Good to know
- Torsion keys required for 5–6" of lift; added rear lift needed for a level stance once keys are in
- Fits 3500/Dually; may need longer U-bolts with overload springs
- Wheel backspacing: 17–18" — 5"; 20"+ — 5.5"
- Professional installation and alignment recommended
This part fits the following vehicles:
| Years | Make & Model |
|---|---|
| 2011–2019 | Chevrolet Silverado 2500 HD |
| 2011–2019 | Chevrolet Silverado 3500 HD |
| 2011–2019 | GMC Sierra 2500 HD |
| 2011–2019 | GMC Sierra 3500 HD |
Fitment is listed by year, make and model. Some applications also depend on cab, bed, drivetrain or engine — if you are not sure, call 636-429-7020 or send us your vehicle details and we will confirm before you order.
Also in:
- 2011-2016 GM/ Chevrolet 2500 LML
- 2011-2016 GM/ Chevrolet 3500 LML
- 2011-2019 GM/Chevy 3500*
- 2017+ GM/ Chevrolet 2500 L5P
- 2017+ GM/ Chevrolet 3500 L5P
- 4"-6.5" Lift Kits
- Chevy Lift Kits
- CST Performance Suspension
- GM Lift Kits
- GM/Chevrolet 2500*
- GM/Chevy 3500*
- GMC/Chevrolet*
- Lift Kits
- New Arrivals
- Top Sellers
