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Home / Suspension & Lift Kits / Lift Kits / Rough Country 12830
Rough CountryPart 12830 · UPC 00843030145750

6-Inch Front and Rear Spring Lift Kit for K20/K25 4WD (1973-1976)

$949.95MAP price
In stock — 96 available
Shipping weight: 280 lb.
  • Fits 1973-1976 Chevrolet K20/K20 Suburban and GMC K25, K2500, K25 Suburban 4WD with 52-inch rear leaf springs
  • New front and rear 6-inch leaf springs — not a block or add-a-leaf lift
  • Raised steering arm, u-bolts, and front installation hardware included
  • Two N3 shock pairs
  • Factory front sway bar: add drop brackets, part 1019

The Trail Fortress check

Will it fit your truck?

✓ Fits

1975–1976 Chevrolet K20 · 4WD
CheyenneCustom DeluxeScottsdaleSilverado
1975–1976 GMC K25 · 4WD
BaseHigh SierraSierra ClassicSierra Grande
1975–1976 GMC K25 Suburban · 4WD
BaseHigh SierraSierra ClassicSierra Grande
1975–1976 Chevrolet K20 Suburban · 4WD
Custom DeluxeScottsdaleSilverado

+ 2 more applications

ONLY fits models with 52" rear leaf springs. If vehicle is equipped with a front sway-bar drop brackets are recommended. (SKU: 1019) If vehicle is equipped with factory front quad shocks (4 total front shocks) please add Factory Quad Shock kit below (SKU: Q20027). 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

A full-spring 6-inch lift for 1973-1976 Chevrolet K20 and K20 Suburban and GMC K25, K2500, and K25 Suburban 4WD: new leaf packs at both ends, a raised steering arm, u-bolts, and two N3 shock pairs. It fits only trucks with 52-inch rear leaf springs.

Both leaf packs are replaced here, so the 12830 sits 6 inches higher on new front and rear springs rather than on blocks or an add-a-leaf. It covers 1973-1976 Chevrolet K20 and K20 Suburban plus GMC K25, K2500, and K25 Suburban 4WD models, and only those with 52-inch rear leaf springs. A raised steering arm corrects the steering geometry that comes with the new height, u-bolts and front installation hardware are supplied, and two N3 shock pairs handle damping. Trucks with a factory front sway bar should add drop brackets, part 1019; trucks with factory front quad shocks need the separate quad shock kit.

What’s in the box

Kit contents

  • 1× Universal U-Bolt Kit 7616
  • 2× 6in Rear Leaf Spring 8028
  • 1× Raised Steering Arm 6600
  • 1× Frt. Inst. Kit 7560
  • 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 12830 kit fits the vehicles shown in the fitment section above.

Specifications

Specs

BrandRough Country
Part number12830
UPC / GTIN00843030145750
Lift height6 in
Shipping weight280 lb
Country of originID
CategorySuspension & Lift Kits › Lift Kits

Why buy here

The fitment-first store

Manufacturer-listed exclusions shown. We publish what a part does not fit — before you buy, not after the return.
Sourced from the application data. Fitment on this page comes from the manufacturer’s application catalog, not a copied listing.
Real install docs. The actual step-by-step guide, linked right on the page.