3.5-4" 2017-2018 GMC Sierra 1500 Upper Control Arm Lift Kit by Skyjacker

The Skyjacker C17350A 3.5-Inch Suspension Lift Kit for 2017-2018 GMC Sierra 1500 trucks increases ride height while improving front suspension geometry, strength, and tire clearance. This complete component package combines heavy-duty upper control arms, front strut spacers, differential lowering spacers, a differential skid plate, rear lift blocks, U-bolts, and installation hardware. The result is a well-rounded suspension upgrade that provides up to 3.5 inches of lift while maintaining controlled handling and dependable performance for street and off-road driving.

Heavy-duty Skyjacker upper control arms replace the factory components and use thick-wall DOM steel tubing for increased strength under demanding suspension loads. Reinforced gussets add rigidity around critical areas, while precision-machined bushing eyelets and ball joint cups promote accurate fitment. Built-in camber correction helps optimize suspension geometry at the increased ride height, and greaseable ball joints provide smooth articulation and long-term serviceability. OEM-style rubber bushings help isolate road vibration and maintain a comfortable, quiet ride.

One-piece front strut spacers add ride height while retaining the factory strut assemblies. Their interlocking construction creates a strong mounting platform, while a durable, powder-coated finish protects against corrosion. Four differential lowering spacers reposition the front differential to improve CV axle and driveshaft operating angles after lifting, helping the front drivetrain work within a more favorable range. A heavy-duty differential skid plate protects critical drivetrain components during off-road use.

At the rear, 2-inch lift blocks and longer U-bolts complement the increased front ride height to create a balanced stance. With geometry-correcting upper control arms, differential relocation components, factory-strut retention, and reinforced suspension hardware, the C17350A delivers a comprehensive 3.5-inch GMC Sierra 1500 lift solution for drivers seeking added clearance, improved suspension strength, and a more aggressive truck stance.

Features & Benefits

• Provides up to 3.5 inches of suspension lift for increased ground clearance and a more aggressive stance
• Heavy-duty upper control arms constructed from thick-wall DOM steel tubing
• Reinforced upper control arm gussets provide additional strength and rigidity
• Built-in camber correction helps optimize front suspension geometry at the increased ride height
• Precision-machined bushing eyelets and ball joint cups provide accurate component fitment
• Greaseable ball joints provide smooth suspension articulation and long-term serviceability
• OEM-style rubber control arm bushings help maintain quiet and comfortable ride characteristics
• Upper control arms arrive preassembled for easier installation
• One-piece front strut spacers provide lift while retaining the factory strut assemblies
• Front strut spacers install without requiring factory strut disassembly
• Interlocking strut spacer construction provides increased strength and durability
• Powder-coated suspension components provide added corrosion resistance
• Four differential lowering spacers help improve CV axle and driveshaft operating angles
• Heavy-duty differential skid plate provides additional front drivetrain protection
• 2-inch rear lift blocks help create a balanced front-to-rear stance
• Includes longer rear U-bolts and required suspension hardware