Introducing the GMC K15 Suspension Lift Kit - Rough Country - 4 Inch Lift Kit, designed specifically for the '77-'78 models. This high-performance suspension upgrade transforms your truck, providing a robust and aggressive stance while enhancing its off-road capabilities with a convenient bolt-on installation.

This premium lift kit includes application-specific front lifted leaf springs that provide increased ground clearance, ensuring your GMC maintains its original ride comfort and control. The package also includes rear lift blocks and brake line brackets which maintain correct suspension geometry. This is crucial for retaining a smooth, factory-like ride post-installation. An optional upgrade is available with replacement rear lifted leaf springs, which provide a consistent rear lift and eliminate the need for lift blocks. This ensures a complete suspension overhaul and offers enhanced performance.

The Rough Country’s N3 Series Shocks come standard with this kit. They are application-valved for precise tuning and are equipped with a 10-stage variable valving system. The high-pressure nitrogen charge, combined with the durable 54mm shock body and 18mm piston rod, guarantees balanced on-road driveability and robust off-road capabilities, all while promising outstanding longevity.

The lift kit also allows accommodation for larger tires, with enough clearance to fit up to a 35-inch tire with proper backspacing. This enhancement gives your truck the bold presence it deserves. Maintaining precise steering and handling after installation is made possible with a raised steering arm that corrects steering geometry, resulting in tight and responsive handling.

Features

• Application-Specific Front Leaf Springs: Engineered for optimal fit and ride quality.
• Optional Rear Leaf Springs: Available replacement rear springs for a complete suspension upgrade.
• Clearance for 35-Inch Tires: Ample room for larger tire setups with no rubbing issues.
• Raised Steering Arm: Corrects steering geometry to improve handling and alignment.
• Premium N3 Series Shocks: Includes shocks specifically valved for perfect blend of comfort and control.
• Limited Lifetime Warranty: Provided by Rough Country for long-term confidence and reliability.

Whether you're looking to enhance your truck's off-road capabilities or improve its overall appearance, the GMC K15 Suspension Lift Kit by Rough Country offers a comprehensive solution with top-tier performance features. If you have any questions, feel free to reach out to our expert team. We have locations in Austin, Texas and Los Angeles, California where we offer installation and customization services. Call us today at 512-982-9393 (TX) or 562-981-6800 (CA) for more information and to discuss your specific needs.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov