4" 1988-1991 GMC Suburban 3/4 ton 4WD Lift Kit by Skyjacker

Skyjacker C140BK8 4 Inch Suspension Lift Kit for 1988-1991 GMC 3/4-Ton Suburban models is designed to increase ground clearance, improve off-road capability, and provide a more aggressive stance while maintaining dependable ride quality. This complete suspension system includes replacement front leaf springs, front and rear U-bolt kits, a leaf spring bushing kit, rear lift blocks, and your choice of shock options to suit a variety of driving styles and vehicle applications.

Built around replacement front leaf springs rather than spacer-based components, the C140BK8 delivers a true 4-inch suspension lift while helping maintain proper suspension travel and load-carrying performance. The included rear lift blocks provide balanced rear ride height, creating clearance for up to 35x12.50 tires while improving trail capability and overall vehicle appearance.

Available shock options allow the suspension system to be tailored to your needs. Choose from no shocks for custom applications, Black MAX shocks for dependable everyday driving, Hydro 7000 hydraulic shocks for a smooth ride, Nitro 8000 nitrogen-charged shocks for enhanced control, or M95 monotube shocks for improved damping consistency and off-road performance. Whether used for towing, recreation, restoration, or trail use, this system delivers a solid foundation for improved capability.

Features & Benefits

• Fits 1988-1991 GMC 3/4-Ton Suburban models
• Provides 4 inches of suspension lift
• Includes replacement front leaf springs
• Rear lift blocks provide a balanced rear ride height
• Complete front and rear U-bolt kits included
• Includes front poly leaf spring bushing kit
• Provides a true suspension lift using replacement front leaf springs
• Improves ground clearance and off-road capability
• Allows clearance for up to 35x12.50 tires
• Compatible with 15-20 x 8-10 inch wheels
• Designed for use with 4.5-inch to OEM wheel backspacing
• Available without shocks or with Black MAX, Hydro 7000, Nitro 8000, or M95 Monotube shocks
• OEM front sway bar applications require SBL20 sway bar lowering brackets
• Recommended for use with extended brake lines
• Moderate installation with no cutting or welding required
• Approximate installation time: 4 hours
• Additional fitted leaves available for increased front-end weight capacity
• Additional fitted leaves required for Big Block and diesel-equipped models