Description
A true 10″ of lift on a one-piece subframe — built for the diesel/Allison HD — for 2020–2025 Chevy Silverado / GMC Sierra 2500HD & 3500HD 4WD (Duramax/Allison). The flagship CST system: maximum height and clearance with extreme-duty steering and a CV front driveshaft.
What this stage includes
- One-piece welded subframe with laser-cut fabricated spindles
- CST boxed upper control arms
- One-piece differential-drop crossmember with sway-bar extensions
- Extended-length CST Extreme-Duty tie rods
- CV-style front driveshaft (diesel/Allison)
- Soft-ride rear leaf springs, 2″ lift blocks, 1–2 torsion keys, and an HD rear U-bolt kit
- Plus CST PRO-Series 2.5 reservoir front and piggyback rear shocks, with compression adjusters
Why CST
- A true 10″ of lift with no cutting or modifying the factory torsion X-member or UCA pocket
- One-piece subframe for maximum ground clearance and front-end protection
- Extreme-duty tie rods and a CV driveshaft built for the weight of the diesel/Allison
- Precision-fabricated in-house by CST in the USA
Good to know
- Built specifically for 2020+ Duramax diesel / Allison 4WD trucks
- Soft-ride rear leaf springs are not designed for towing — add air bags for load
- Clears 38″ tires with no trimming, or 40s with minor trimming (20×9, 4.79″ backspacing)
- Professional installation and alignment recommended
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