3.5-Inch Vertex 2.5 and V2 Lift Kit for Cast Steel LCA Silverado
- Adjustable Vertex 2.5 front shocks with a V2 monotube rear pair
- 3.5-inch knuckle lift for 2014–2019 Chevy Silverado 1500 and GMC Sierra 1500 4WD
- Cast steel lower control arms only — cast aluminum and stamped steel need a different kit
- Denali, Denali Ultimate, and eAssist trucks are excluded
- Cutting and grinding required — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
+ 1 more applications
✕ Does not fit
- Denali or Denali Ultimate models
- Models with eAssist (ECO Hybrid) package
Requires cutting and grinding. Does NOT work with aftermarket control arms. New lift block replaces the factory-equipped block. To ensure proper fit please confirm if the stock control arms are cast aluminum cast steel or stamped steel. For a visual please click here. To ensure adequate clearance when lowering the differential models equipped with a mass damper on the front differential must be removed. To retain factory wheels a 0.25" wheel spacer will be required SKU: 1065. Fitment on this page is based on the manufacturer’s application data.
About this kit
3.5-Inch Vertex 2.5 and V2 Lift Kit, fitment-checked
Adjustable Vertex 2.5 shocks at the front and a V2 monotube pair at the rear, riding on cast steel LCA knuckles for 3.5 inches of lift on 2014–2019 Chevy Silverado 1500 and GMC Sierra 1500 4WD trucks. Confirm the lower control arms are cast steel first. Denali, Denali Ultimate, and eAssist trucks are excluded, and the install requires cutting and grinding.
This 3.5-inch lift kit serves 2014–2019 Chevy Silverado 1500 and GMC Sierra 1500 4WD trucks with cast steel lower control arms, and splits the damping: adjustable Vertex 2.5 shocks at the front, a V2 monotube pair at the rear. Cast steel knuckles create the height, leaving the factory springs and front geometry largely as they were. Before ordering, verify the control arm material and check the truck against the exclusions — Denali, Denali Ultimate, and eAssist models will not work, and neither will aftermarket control arms. Cutting and grinding are required, and a downloadable installation guide is available.
What’s in the box
Kit contents
- 1× 3.5" Kit Box 12170BOX1
- 2× Vertex 2.5 Adj FR 3.5in 685130
- 1× 2014-16.5 3.5in Cast Steel Lca Knuckles 12430BOX1
- 1× V2 MONOTUBE SHOCK PAIR 760738-2
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 12457 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 12457 |
| UPC / GTIN | 00843030198251 |
| Lift height | 3.5 in |
| Shock package | Vertex series |
| Shipping weight | 156 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here