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4in GM Suspension Lift Kit

GM 4" Suspension Lift Kit  [100.20]
In stock
SKU: 100.20 | Brand: Rough Country
Make sure it fits!


  • Install Time: 6 - 8 hours
    Average estimated install time peformed by a professional shop or mechanic.
  • Features

  • Increased ground clearance
  • Includes application valved N2.0 series shock absorbers which offer the best in balanced performance for on and off-road use.
  • Notes

  • If vehicle is equipped with a front sway-bar, drop brackets are recommended. (#1019)
  • Optional steering arm only fits models with 3-bolt open knuckle steering.
This product features Rough Country's Lifetime Replacement Warranty. All products are warranted to be free from defects in material and craftsmanship for the life of the vehicle if utilized in accordance with the manufacturer's instructions for installation and operation of said products. For complete details and coverage information please click here.
We are proud to offer Same Day Shipping. If you place your order before 4pm (cst) your order will be shipped that day. Parts ordered must be in stock for the order to ship. Approximately 97% of all orders placed leave our warehouses within 24 to 48 hours(not including weekends & holidays). For complete details please click here.


  • Front
  • Lifted leaf springs
  • Brake line relocation brackets
  • U-bolts
  • Hardware
  • Rear
  • 4" lift blocks
  • U-bolts
  • Hardware
  • Shocks
  • (4) Premium N2.0 series

Fitment Table

Years Drive Make Model
1969-19724WDChevrolet1/2-Ton Pickup
1969-19724WDChevrolet3/4-Ton Pickup
1969-19724WDChevrolet1/2-Ton Suburban
1969-19724WDGMC1/2-Ton Pickup
1969-19724WDGMC3/4-Ton Pickup
1969-19724WDGMC1/2-Ton Suburban
Always check the product's overview, for more important fitment information


Tire Wheel Backspacing Offset
35x12.50 R1515x84.5in-
315/75 R1616x84.5in-
315/70 R1717x94.5-5in-12 to 0mm
315/65 R1818x94.5-5in-12 to 0mm
315/55 R2020x94.5-5in-12 to 0mm
Due to differences in manufacturing, dimension and inflated measurements, tire and wheel combinations should be test fit prior to installation.


  1. nice price - Posted by: guinelle1 (6/9/15)

    cheapest lift you can find for these older chevys, put it on a 69 blazer fit great.

  2. Great - Posted by: Dieselfreak (4/15/15)

    I put this on my 1970 Chevy 1/2 ton worked great

  3. Great Product, easy installation - Posted by: dieseltech (4/4/15)

    This is my second Rough Country lift kit, and for the second time I was not disappointed. I installed this kit on my 68 Chevy K20. I was looking to soften the ride quality without losing ride height. This kit achieved that with flying colors. Installation was easy and the fit was perfect.

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