4 Inch Lift Kit | RR Blocks | Chevy/GMC C10/K10 Truck & SUV/K5 Blazer (73-76)

Transform Your Truck's Stance and Capability: Upgrade your GM truck from front to back with Rough Country's 4" Suspension Lift Kit. This premium lift delivers a leveled, aggressive look while enhancing ride height and off-road readiness all with an easy bolt-on installation. Engineered for Superior Ride Quality: This kit includes application-specific front lifted leaf springs, delivering increased ground clearance without sacrificing ride comfort or control. Rear lift blocks and brake line brackets maintain proper geometry, ensuring a smooth, factory-like ride after installation. Enhanced Performance with N3 Series Shocks: Rough Country's N3 series shocks come standard valved for your exact application and designed to provide a perfect balance of on-road smoothness and off-road capability. Featuring a 10-stage variable valving system, high-pressure nitrogen charge, and durable 54mm shock body with 18mm piston rod, these shocks are built for performance and longevity. Room for Bigger Tires: Make room for aggressive wheel and tire combos. This 4" lift offers enough clearance to run up to a 35" tall tire with proper backspacing, giving your truck the rugged stance it deserves. Improved Steering and Handling: To maintain proper drivability, a raised steering arm is included correcting steering geometry for tight, responsive handling after the lift. Limited Lifetime Warranty: Rough Country backs this kit with a Limited Lifetime Warranty, giving you long-term confidence on and off the road.

Features

Boosted Ground Clearance: Gain the extra height needed for better off-road capability and obstacle clearance. Application-Specific Front Leaf Springs: Engineered for a perfect fit and optimal ride quality. Clears 35-Inch Tires: Provides ample room to run up to a 35" tall tire with no rubbing. Raised Steering Arm Included: Corrects steering geometry for precise handling and improved alignment. Premium N3 Series Shocks: Includes application-valved N3 shock absorbers for balanced on-road comfort and off-road control.

Fitment and installation notes

If vehicle is equipped with a front sway-bar, drop brackets are recommended SKU: 1019 . Vehicles with factory quad shocks (2 front shocks per side) will simply use a single aftermarket shock.

Front components

Lifted Leaf Springs Steering Arm Brake Line Relocation Brackets U-Bolts Hardware

Rear components

4" Lift Blocks U-Bolts Hardware

Tire and wheel information

35x12.50R15:15x8:6x5.5:-19:-;35x12.50R15:15x8:6x5.5:-18:-;35x12.50R15:15x8:6x5.5:+0:-;35x12.50R15:15x8:6x5.5:+1:-;305/70R17:17x8.5:6x5.5:+0:-;285/75R17:17x8.5:6x5.5:+0:-;305/70R17:17x8.5:6x5.5:+1:-;285/75R17:17x8.5:6x5.5:+1:-;315/70R17:17x9:6x5.5:-12:-;305/70R17:17x9:6x5.5:-12:-;285/75R17:17x9:6x5.5:-12:-;295/70R18:18x8:6x5.5:+0:-;295/70R18:18x8:6x5.5:+1:-;295/70R18:18x8.5:6x5.5:+0:-;285/75R18:18x8.5:6x5.5:+0:-;295/70R18:18x8.5:6x5.5:+1:-;285/75R18:18x8.5:6x5.5:+1:-;295/70R18:18x9:6x5.5:-12:-;295/70R18:18x10:6x5.5:-25:-;295/70R18:18x10:6x5.5:-19:-;295/70R18:18x10:6x5.5:-18:-;295/60R20:20x9:6x5.5:-12:-;35x12.50R20:20x10:6x5.5:-25:Minor Trimming;35x12.50R20:20x10:6x5.5:-19:Minor Trimming;295/60R20:20x10:6x5.5:-19:Minor Trimming;35x12.50R20:20x10:6x5.5:-18:Minor Trimming;295/60R20:20x10:6x5.5:-18:Minor Trimming;35x12.50R22:22x10:6x5.5:-25:Minor Trimming;285/55R22:22x10:6x5.5:-25:-;35x12.50R22:22x10:6x5.5:-19:Minor Trimming;295/50R22:22x10:6x5.5:-19:Minor Trimming;285/55R22:22x10:6x5.5:-19:-;35x12.50R22:22x10:6x5.5:-18:Minor Trimming;295/50R22:22x10:6x5.5:-18:Minor Trimming;285/55R22:22x10:6x5.5:-18:-

Estimated installation time

6-8 hours

Vehicle fitment

Match the exact year, model, trim, drivetrain, and any cab or bed requirements in the notes.

Installation instructions

View manufacturer instructions

Part number: 11530