Exacting engineered CNC machined ductile iron replacement steering knuckles preserve the OEM track width and maintain proper steering geometry through the travel cycle. Knuckles preserve CV extension and prevent CV axle overextension within the OEM tolerances. Aligns to OEM specifications and works properly with Electric Stability Control (ESC) system. The pair of sturdy front and rear drop crossmembers provides a solid mounting point for the OEM lower control arms. A differential skid plate tie the two crossmembers together to create a rigid sub-frame and added protection for vital steering and driveline components. Two separate differential relocation brackets reposition and correct front CV axles and driveshaft angles. Skyjackers torsion bar drop brackets reposition OEM torsion bar crossmember down to parallel the OEM lower control arm mounts. Torsion bar drop brackets are precision engineered to maintain proper suspension geometry. Includes everything necessary for a complete front and rear lift. This all-inclusive kit also has front bump stop brackets, front and rear brake line relocation brackets, differential vent tube extension, front sway bar links and sway bar lowering brackets, cast ductile iron rear blocks with longer Grade 8 U-bolts and lock nuts.
Features
- Works Properly with Electronic Stability Control [ESC] System
- Front And Rear Crossmembers And Skid Plate - Rigid Sub-frame
- CNC Machined Ductile Iron Knuckles Preserve Oem Track Width
- No Cutting/No Grinding of OEM Differential Housing Required
- Precision Engineered To Maintain Proper Suspension Geometry
- Drop Torsion Bar Brackets Maintain OEM Suspension Geometry
- Prevents CV Axle Overextension Within The OEM Tolerances
- Knuckles Keep Same Steering Geometry And Turning Radius
- Two Separate Diff Brackets Reposition/Correct CV Angles
- Modern Exacting CNC Laser Cut; Bends and Machining
Part number: C20681TDK
Skyjacker 20 GM 2500/3500HD 4WD 6In KIT
- Canadian company, prices in CAD
- Shipping and duties shown before you pay, no surprises at the door
- 30 day returns from delivery, see policy
Vehicle fitment
Estimated fitment — verify before purchase| Years | Make | Model | Drive | Notes |
|---|---|---|---|---|
| 2020–2025 | Chevrolet | Silverado 2500 HD | 4WD | Not Designed To Be Used With 17"-18" OEM Wheels.; Not Designed To Fit Models With Magnetic Ride Control.; Not Designed To Fit Dually Models.; Not Designed To Fit Models With Top Mount Rear Over Load Leaf Springs.; Models With Top Mount Rear Over Load Leaf Springs Must Order Rear U-Bolt Kit Part # UDB6R.; Gas Models May Require Modification To OEM Exhaust For Driveshaft Clearance. |
| 2020–2025 | Chevrolet | Silverado 3500 HD | 4WD | Not Designed To Be Used With 17"-18" OEM Wheels.; Not Designed To Fit Models With Magnetic Ride Control.; Not Designed To Fit Dually Models.; Not Designed To Fit Models With Top Mount Rear Over Load Leaf Springs.; Models With Top Mount Rear Over Load Leaf Springs Must Order Rear U-Bolt Kit Part # UDB6R.; Gas Models May Require Modification To OEM Exhaust For Driveshaft Clearance. |
| 2020–2025 | GMC | Sierra 2500 HD | 4WD | Not Designed To Be Used With 17"-18" OEM Wheels.; Not Designed To Fit Models With Magnetic Ride Control.; Not Designed To Fit Dually Models.; Not Designed To Fit Models With Top Mount Rear Over Load Leaf Springs.; Models With Top Mount Rear Over Load Leaf Springs Must Order Rear U-Bolt Kit Part # UDB6R.; Gas Models May Require Modification To OEM Exhaust For Driveshaft Clearance. |
| 2020–2025 | GMC | Sierra 3500 HD | 4WD | Not Designed To Be Used With 17"-18" OEM Wheels.; Not Designed To Fit Models With Magnetic Ride Control.; Not Designed To Fit Dually Models.; Not Designed To Fit Models With Top Mount Rear Over Load Leaf Springs.; Models With Top Mount Rear Over Load Leaf Springs Must Order Rear U-Bolt Kit Part # UDB6R.; Gas Models May Require Modification To OEM Exhaust For Driveshaft Clearance. |
Specifications
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | Skyjacker |
| Part number | SKYC20681TDK |
| Category | Suspension & Lift |
Related guides
All guides →Customer reviews

Worth adding
Useful in any truck — ships separately in its own box.
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