6 Inch Lift Kit
56 Inch RR Springs · Chevy/GMC 3/4-Ton Suburban (77-91)/C25/K25 Truck (77-87)
$949.95the kit
In stock at Rough Country · as of Sep 19
Tell us your truck and we'll check this kit against it.
Nothing is charged online. We confirm fitment and the final price on the call.
Before you buy
ONLY fits models with front and rear solid axles. ONLY fits models with 56-inch factory rear leaf springs. 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.
Tires Rough Country fitted with this kit
Tested setups from the maker. Tap a tire size to shop it; a size we do not stock yet, we can quote on your call.
| Tire | Wheel | Bolt pattern | Offset | Note |
|---|---|---|---|---|
| 37x13.50R15 · not stocked yet | 15x8 | 8x6.5/8x165.1 | -19 | |
| 37x13.50R15 · not stocked yet | 15x8 | 8x6.5/8x165.1 | -18 | |
| 37x13.50R15 · not stocked yet | 15x8 | 8x6.5/8x165.1 | +0 | |
| 37x13.50R15 · not stocked yet | 15x8 | 8x6.5/8x165.1 | +1 | |
| 37x12.50R17 | 17x9 | 8x6.5/8x165.1 | -12 | |
| 37x12.50R18 | 18x9 | 8x6.5/8x165.1 | -12 | |
| 37x12.50R20 | 20x9 | 8x6.5/8x165.1 | -12 |
About this kit
Give your truck an impressive upgrade, front to back with Rough Country’s 6" GM Suspension Lift System! This easy-to-install lift kit raises the front of your vehicle to be equal height with the rear for a leveled, better-than-stock look that gives an improved ride height and more aggressive appearance. This kit features a set of front lifted leaf springs allowing you gain additional ride height without sacrificing ride quality or performance. A set of rear leaf springs and brake line brackets are provided to keep everything at optimum angles for a factory-like ride, even after lifting. A set of Rough Country's premium N3 shocks are also included. These fine tuned 10-stage variable high-pressure Nitrogen charged shocks offer a fantastic blend of off-road action and smooth highway ride quality. With a durable 18mm spring-loaded piston rod and faster-cooling 54mm shock body. Get the wheels you want! Rough Country's 6" GM Suspension Lift System comes with everything you need to fit up to a 37" tire with proper wheel backspacing. Best of all, Rough Country's 6” GM Suspension Lift System is backed by our Lifetime Replacement Warranty.
Highlights
- Increased ground clearance Includes application valved N3 series shock absorbers which offer the best in balanced performance for on and off-road use.
What's in the box
- 2 × 4in Rear Leaf Spring | Chevy/GMC C10/K10 Truck & SUV/K5 Blazer 4WD (77-91) Part #8026
- 1 × S800012bshing Kit | Chevy C20/K20 Pickup (73-87) GMC C15/K15 Pickup (73-87) Part #6070
- 1 × Installation Kit | Chevy 3/4-Ton Suburban (88-91) Chevy C20/K20 Pickup (73-87) Part #6512
- 1 × Installation Kit | Chevy 3/4-Ton Suburban (88-91) Chevy C20/K20 Pickup (77-87) Part #7511
- 1 × Raised Steering Arm | Chevy/GMC C10/K10 C15/K15 Truck/Half-Ton Suburban/K5 Blazer (69-91) Part #6600
- 2 × 6in Front Leaf Spring | Chevy/GMC C10/K10 Truck & SUV/K5 Blazer 4WD (73-91) Part #8015
- 1 × N3 Shock Pair Part #23173
- 1 × N3 Shock Pair Part #23174
- 1 × Spring Bushings | Chevy 3/4-Ton Suburban (88-91) Chevy C20/K20 Pickup (77-87) Part #6055
| Front | Lifted leaf springs Steering Arm Brake line relocation brackets U-bolts Hardware |
|---|---|
| Rear | Lifted leaf springs 2" lift blocks U-bolts Hardware |
Specifications
| Brand | Rough Country |
|---|---|
| Part number | 21530 |
| UPC | 843030145798 |
| Lift | 6″ |
| Shipping weight | 297 lb |
| Country of origin | China |
| Shipping | Ground shipping only · Arrives in more than one box |
Trucks it fits
All 13 fitments
| Truck | Years | Drive | Trims |
|---|---|---|---|
| Chevrolet K20 | 1977–1981 | 4WD | Cheyenne |
| Chevrolet K20 | 1977–1980 | 4WD | Custom Deluxe |
| Chevrolet K20 | 1977–1986 | 4WD | Scottsdale, Silverado |
| Chevrolet K20 | 1981–1986 | 4WD | Custom |
| Chevrolet K20 | 1981 | 4WD | Deluxe |
| Chevrolet K20 Suburban | 1977–1980 | 4WD | Custom Deluxe |
| Chevrolet K20 Suburban | 1977–1986 | 4WD | Scottsdale, Silverado |
| Chevrolet K20 Suburban | 1981–1986 | 4WD | Custom |
| Chevrolet K20 Suburban | 1981 | 4WD | Deluxe |
| GMC K2500 | 1979–1986 | 4WD | Base, High Sierra, Sierra Classic |
| GMC K2500 | 1979–1982 | 4WD | Sierra Grande |
| GMC K2500 Suburban | 1979–1986 | 4WD | Base, High Sierra, Sierra Classic |
| GMC K2500 Suburban | 1979–1982 | 4WD | Sierra Grande |