2014-2018 GMC Sierra 1500 4wd (With One Piece OE Cast steel Upper Control Arms) - Tuff Country 4" Suspension Lift Kit

Tuff Country GMC Sierra 1500 4
Tuff Country - 14059-gmc-lift
Authorized Dealer
Tuff Country #14059
Tuff Country - 14059-gmc-lift
Authorized Dealer
Sale Price:
  • $543.01
$678.76 Save: $135.75 (20%)
Save $54.30 more with Code: 10EXTRA - details


Usually Ships within 24 to 48 Hours (excluding Saturday and Sunday)
Arrives 1 to 5 days after product ships


Tuff Country 4" suspension lift kit for the GMC Sierra 1500 is designed to make lifting your vehicle simple and affordable. This easy to install suspension lift kit uses new tubular control arms (with poly bushings) and upper strut spacers to lift the front of your GMC Sierra 1500 3" and cast iron rear block with extended ubolts lift the rear 2". Also included are differential drops. New struts or shocks are not required (rear shock relocating brackets included).

Note: To purchase Tuff Country 14059KN (w/SX8000 Shocks) or 14059KH (w/SX6000 Shocks) please select in options above.

At Suspension Connection we are the #1 retailer of Tuff Country products in the world. Great prices, expert knowledge and exceptional customer service are why so many customers trust us with their Tuff Country purchases. Try us out!

Tuff Country has been producing quality suspension products for over 25 years and backs all lift kits with a limited lifetime warranty. image

Features and Benefits

  • Upper Control Arm Drop / Strut Spacer Kit
  • No Drilling Required to Install
  • Requires new rims with 4.5" backspacing
  • Maintains a near factory ride
  • Allows use of 33" x 12.5" tires
  • New shocks or struts not required
  • Proudly Made in the USA - (many other brands are not)
  • Limited Lifetime Warranty

Installation Notes

1. Factory rims will not fit with this lift kit. A rim with 4.5" or less wheel back spacing is required.
2. Excludes vehicles equipped with Magnetic Ride Control.
3. Fits models equipped with factory one-piece cast steel upper arms (see image in additional images to determine what you have)

Tech Specs

Download Instructions: 14059 Instructions
Recommended Tire Size: 33" x 12.5"
Amount of Lift: 4" Front / 2" Rear
Items Included:

2) Upper Control Arms, 2) Upper Strut Spacers, 2) Rear Upper Shocks Brackets, 2) 3" Cast Iron Blocks (replaces factory 1" blocks), 4) Extended U-bolts, Hardware Bag and Poly Bushings for Control Arms

Weight: 55.00 lbs.
Part 14059 fits:
  • 2018 GMC Sierra 1500
  • 2017 GMC Sierra 1500
  • 2016 GMC Sierra 1500
  • 2015 GMC Sierra 1500
  • 2014 GMC Sierra 1500

Customer Questions & Answers

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  • 4.0 out of 2 Overall
  • 100% reviews recommend this product
Review Product
4" leveling / lift kit
Truck looks and rides great after installation. Directions for the install need some modifications for a 2015 GMC 1500. Dropping the front diff does not work out even close to what the directions descibe. I did not have to notch the crossmember which it gives measurements of where to cut. Glad I checked before I cut it. But I did have to trim 2 fins off the front diff to clear the frame not the cross member. Also had to trim rack and pinion steering to clear front diff. Very tight even after trimming. My suggestion would be a 3/4" drop instead of 1" on the front diff. I spent more time makeing the front diff clear than installing the rest of kit. This was installed on a brfand new truck with 600 miles on it. Rides better than stock!!!!
Recommend this Product: YES
2015 GMC 1500 SLE crew cab
– Value
– Quality
– Installation
Directions need to be revised for a 2015
Truck looks and rides great after the install. I have done a few other brands and this was the hardest to install. Nothing just went together. I had to bend, pry and cut more than the directions implied. Instead of 1" drop spacers from the front diff they should only be 3/4". The cross member which in the directions gives you measurements of where to notch I didn't need to. Thankfully I checked for clearance after dropping the diff. I did have to trim the Rack and Pinion plus cooling fins off the diff to clear the frame not the crossmember. I also had to open up both sides of the pockets for the new upper control arms to fit. This is a brand new 2015 GMC SLE crew cab with 600 miles on it. Looks great and rides like stock.
Recommend this Product: YES
2015 GMC SLE crew cab 600 miles on it.
– Value
– Quality
– Installation