4 Inch Lift Kit | RR Spring | Chevy/GMC C10/K10 C15/K15 Truck/Half-Ton Suburban (69-72)

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 features application-specific front and rear lifted leaf springs, delivering increased ground clearance without compromising ride comfort or control. By eliminating rear lift blocks, the kit ensures consistent lift and improved suspension geometry, resulting in a smooth, factory-like ride. Brake line brackets are also included to maintain proper alignment and safety throughout the suspension travel. 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. 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 & Rear 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. Premium N3 Series Shocks: Includes application-valved N3 shock absorbers for balanced on-road comfort and off-road control.

Fitment and installation notes

ONLY fits models with 52" rear leaf springs. If vehicle is equipped with a front sway-bar, drop brackets are recommended SKU: 1019 . Rear Spring Measurement: To confirm rear spring size a measurement will have to be pulled from eyelet to eyelet. For a visual, please click here .

Front components

Lifted Leaf Springs Brake Line Relocation Brackets U-Bolts Hardware

Rear components

Lifted Leaf Springs U-Bolts Hardware

Tire and wheel information

35x12.50R15:15x8:6x5.5:-19:-;35x12.50R15:15x8:6x5.5:-18:-;35x12.50R16:16x8:6x5.5:-12:-;35x12.50R16:16x8:6x5.5:-6:-;305/70R17:17x8.5:6x5.5:-12:-;285/75R17:17x8.5:6x5.5:-12:-;35x12.50R17:17x8.5:6x5.5:+0:-;315/70R17:17x8.5:6x5.5:+0:-;305/70R17:17x8.5:6x5.5:+0:-;35x12.50R17:17x8.5:6x5.5:+1:-;315/70R17:17x8.5:6x5.5:+1:-;305/70R17:17x8.5:6x5.5:+1:-;35x12.50R17:17x9:6x5.5:-19:-;315/70R17:17x9:6x5.5:-19:-;305/70R17:17x9:6x5.5:-19:-;285/75R17:17x9:6x5.5:-19:-;35x12.50R17:17x9:6x5.5:-18:-;315/70R17:17x9:6x5.5:-18:-;305/70R17:17x9:6x5.5:-18:-;285/75R17:17x9:6x5.5:-18:-;35x12.50R17:17x9:6x5.5:-12:-;315/70R17:17x9:6x5.5:-12:-;305/70R17:17x9:6x5.5:-12:-;35x12.50R17:17x9:6x5.5:+0:-;315/70R17:17x9:6x5.5:+0:-;305/70R17:17x9:6x5.5:+0:-;35x12.50R17:17x9:6x5.5:+1:-;315/70R17:17x9:6x5.5:+1:-;305/70R17:17x9:6x5.5:+1:-;35x12.50R18:18x8.5:6x5.5:+0:-;295/70R18:18x8.5:6x5.5:+0:-;285/75R18:18x8.5:6x5.5:+0:-;35x12.50R18:18x8.5:6x5.5:+1:-;295/70R18:18x8.5:6x5.5:+1:-;285/75R18:18x8.5:6x5.5:+1:-;35x12.50R18:18x9:6x5.5:-12:-;295/70R18:18x9:6x5.5:-12:-;285/75R18:18x9:6x5.5:-12:-;35x12.50R18:18x9:6x5.5:+0:-;295/70R18:18x9:6x5.5:+0:-;285/75R18:18x9:6x5.5:+0:-;35x12.50R18:18x9:6x5.5:+1:-;295/70R18:18x9:6x5.5:+1:-;285/75R18:18x9:6x5.5:+1:-;295/70R18:18x10:6x5.5:-25:-;295/70R18:18x10:6x5.5:-19:-;295/70R18:18x10:6x5.5:-18:-;35x12.50R20:20x9:6x5.5:-12:-;295/65R20:20x9:6x5.5:-12:-;295/60R20:20x9:6x5.5:-12:-;35x12.50R20:20x9:6x5.5:+0:-;295/65R20:20x9:6x5.5:+0:-;295/60R20:20x9:6x5.5:+0:-;35x12.50R20:20x9:6x5.5:+1:-;295/65R20:20x9:6x5.5:+1:-;295/60R20:20x9:6x5.5:+1:-;35x12.50R20:20x10:6x5.5:-25:Minor Trimming;295/60R20:20x10:6x5.5:-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;35x12.50R20:20x12:6x5.5:-44:Trimming Required;35x12.50R22:22x10:6x5.5:-25:Minor Trimming;285/55R22:22x10:6x5.5:-25:-;35x12.50R22:22x10:6x5.5:-19:Minor Trimming;285/55R22:22x10:6x5.5:-19:-;35x12.50R22:22x10:6x5.5:-18:Minor Trimming;285/55R22:22x10:6x5.5:-18:-;35x12.50R22:22x12:6x5.5:-44:Trimming Required

Estimated installation time

6-8 hours

Vehicle fitment

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

Part number: 18030