4 Inch Lift Kit 56 Inch RR Springs | Chevy/GMC C20/K20 C25/K25 Truck (77-87)
Overview
Give your truck an impressive upgrade, front to back with Rough Country’s 4" 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 4" GM Suspension Lift System comes with everything you need to fit up to a 35" tire with proper wheel backspacing.
Best of all, Rough Country's 4” GM Suspension Lift System is backed by our Lifetime Replacement Warranty.
Features
- Increased ground clearance
- Includes application valved N3 series shock absorbers which offer the best in balanced performance for on and off-road use.
Notes - Important
- ONLY fits models with 56" 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.
Specs
| SKU | 25530 |
|---|---|
| Est. Install Time | 6 - 8 hours |
In the Box
Front
- Lifted leaf springs
- Steering Arm
- Brake line relocation brackets
- U-bolts
- Hardware
Rear
- Lifted leaf springs
- U-bolts
- Hardware
Shocks
- (4) Premium N3 series
Instructions
- Est. Install Time: 6 - 8 hours
- View Instruction Sheet
Vehicle Fitment
| Years | Drive | Make | Model |
|---|---|---|---|
| 1977-1987 | 4WD | Chevy | C20/K20 Pickup |
| 1977-1987 | 4WD | Chevy | C20/K20 Suburban |
| 1977-1987 | 4WD | GMC | C25/K25 Pickup |
| 1977-1987 | 4WD | GMC | C25/K25 Suburban |
ALWAYS read all product page details for more important fitment information
Recommended Tires & Wheels
| Tire | Wheel | Bolt Pattern | Offset | Note |
|---|---|---|---|---|
| 35x12.50R15 | 15x8 | 8x6.5/8x165.1 | +0 | - |
| 35x12.50R17 | 17x8.5 | 8x6.5/8x165.1 | +0 | - |
| 35x12.50R17 | 17x8.5 | 8x6.5/8x165.1 | +1 | - |
| 35x12.50R17 | 17x9 | 8x6.5/8x165.1 | -12 | - |
| 35x12.50R17 | 17x9 | 8x6.5/8x165.1 | +0 | - |
| 35x12.50R17 | 17x9 | 8x6.5/8x165.1 | +1 | - |
| 35x12.50R18 | 18x8.5 | 8x6.5/8x165.1 | +0 | - |
| 35x12.50R18 | 18x8.5 | 8x6.5/8x165.1 | +1 | - |
| 35x12.50R18 | 18x9 | 8x6.5/8x165.1 | -12 | - |
| 35x12.50R18 | 18x9 | 8x6.5/8x165.1 | +0 | - |
| 35x12.50R18 | 18x9 | 8x6.5/8x165.1 | +1 | - |
| 35x12.50R18 | 18x10 | 8x6.5/8x165.1 | -25 | - |
| 35x12.50R18 | 18x10 | 8x6.5/8x165.1 | -24 | - |
| 35x12.50R18 | 18x10 | 8x6.5/8x165.1 | -19 | - |
| 35x12.50R18 | 18x10 | 8x6.5/8x165.1 | -18 | - |
| 35x12.50R20 | 20x9 | 8x6.5/8x165.1 | -12 | - |
| 35x12.50R20 | 20x9 | 8x6.5/8x165.1 | +0 | - |
| 35x12.50R20 | 20x9 | 8x6.5/8x165.1 | +1 | - |
| 35x12.50R20 | 20x10 | 8x6.5/8x165.1 | -25 | - |
| 35x12.50R20 | 20x10 | 8x6.5/8x165.1 | -24 | - |
| 35x12.50R20 | 20x10 | 8x6.5/8x165.1 | -19 | - |
| 35x12.50R20 | 20x10 | 8x6.5/8x165.1 | -18 | - |
| 35x12.50R22 | 22x10 | 8x6.5/8x165.1 | -25 | - |
| 35x12.50R22 | 22x10 | 8x6.5/8x165.1 | -24 | - |
| 35x12.50R22 | 22x10 | 8x6.5/8x165.1 | -19 | - |
| 35x12.50R22 | 22x10 | 8x6.5/8x165.1 | -18 | - |
Due to differences in manufacturing, dimension and inflated measurements, tire and wheel combinations should be test fit prior to installation
