6-Inch Front and Rear Spring Lift Kit for Chevy/GMC 4WD (1973-1976)
- Fits 1973-1976 Chevrolet and GMC 4WD Blazer, K5 Blazer, K10, K15, Jimmy, and Suburban models with 52-inch rear leaf springs
- Replaces front and rear leaf packs — no add-a-leaf; raised steering arm included
- Two N3 shock pairs, application-valved
- Clears tires up to 37 inches
- Install time: 6-8 hours; downloadable installation guide available
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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. Vehicles with factory quad shocks (2 front shocks per side) will simply use a single aftermarket shock. Fitment on this page is based on the manufacturer’s application data.
About this kit
6-Inch Front and Rear Spring Lift Kit, fitment-checked
Both ends get new springs here: 6-inch front and rear leaf springs, a raised steering arm, and two N3 shock pairs for 1973-1976 Chevrolet and GMC 4WD trucks and SUVs. It fits only trucks with 52-inch rear leaf springs, so measure eyelet to eyelet before ordering. Tire clearance runs to 37 inches.
Replacing both leaf packs rather than adding to the rear, the 12630 raises 1973-1976 Chevrolet and GMC 4WD trucks and SUVs — Blazer, K5 Blazer, K10, K15, Jimmy, and the Suburban variants — by 6 inches. The rear springs are cut for a 52-inch eyelet-to-eyelet measurement, so confirm yours before ordering. A raised steering arm and two N3 shock pairs round out the package, and Rough Country publishes a downloadable installation guide. Budget 6-8 hours. Add drop brackets, part 1019, if your truck runs a factory front sway bar; quad-shock trucks use a single aftermarket shock per side.
What’s in the box
Kit contents
- 1× Universal U-Bolt Kit 7615
- 2× 6in Rear Leaf Spring 8028
- 1× S800012bshing Kit 6070
- 1× Installation Kit 7509
- 1× Raised Steering Arm 6600
- 2× 6in Front Leaf Spring 8015
- 1× N3 Shock Pair 23173
- 1× N3 Shock Pair 23174
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 12630 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 12630 |
| UPC / GTIN | 00843030145736 |
| Lift height | 6 in |
| Shipping weight | 278 lb |
| Country of origin | ID |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
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