2007-2018 GMC Sierra 1500 4x4 - 2" EZ-Install Lift Kit (w/rear lift blocks) by Tuff Country

2007-2018 GMC Sierra 1500 2" Lift Kit Tuff Country 12031
Shown with Shock Absorbers (sold separately, see options)
Tuff Country 12031
Tuff Country - 12031-gmc-sierra
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Sale Price:
  • $172.39
$229.70 Save: $57.31 (25%)

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Gain additional tire clearance with this Tuff Country EZ-Ride Suspension GMC Sierra 1500 2" EZ-Install lift kit. This simple to install lift kit uses lower strut / coil spring spacers that mount to the bottom of the strut. This makes installation much easier than the standard upper coil strut spacers. Rear cast iron lift blocks along with extended ubolts raise the rear end 2 inches. Once installed the front end will be slightly lower than the rear. New shocks / struts are not required to install this lift kit properly.

Made in the USA for a Reason - Since 1988 Tuff Country EZ-Ride Suspension has been and still remains one of the very few suspension lift kit brands that manufactures, designs and packages its products in the USA. Why does this matter? Buy a lift kit from nearly any other brand that imports their products from overseas and you will get inferior steel, components and hardware. Many brands will also leave out important components that are crucial to proper suspension geometry. All can lead to fitment, alignment and sagging issues down the road. While Tuff Country may not be the cheapest lift kit on the market, quality components and happy customers are a higher priority.

Note: To purchase Tuff Country 12031KN (w/SX8000 Shocks) please select in options above.

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

  • Lower mount strut spacers for simple installation
  • New front struts are not required
  • Rear 3 inch lift blocks replace factory blocks
  • Maintains the factory rake look (rear end slightly higher than the front end)
  • Lifts Sierra 2" in front and rear
  • Proudly Made in the USA - (most brands are not)
  • Lifetime Warranty

Installation Notes

1. New extended rear shocks are optional, not required.
2. If upgrading to a larger tire (32 x 10.50) with aftermarket rims a positive 30 offset is required. If lower than a positive 30 offset wheel is use, trimming is required. If kit is used with factory rims, no trimming will be required.

3. New body style only (excludes 2007 "classic body style")
4. Exludes vehicles with Magnetic Ride Control.
5. Excludes 2016-2017 models with stamped lower control arms

Tech Specs

Download Instructions: 12031 Instructions
Recommended Tire Size: 32 x 10.50
Amount of Lift: 2" Front / 2" Rear
Items Included:

2) Front lower coil spacers, 2) 3" Cast Iron Lift Blocks (replaces factory blocks) , 2) Hardware bags

Weight: 25.00 lbs.
Part 12031 fits:
  • 2018 GMC Sierra 1500
  • 2017 GMC Sierra 1500
  • 2016 GMC Sierra 1500
  • 2015 GMC Sierra 1500
  • 2014 GMC Sierra 1500
  • 2013 GMC Sierra 1500
  • 2012 GMC Sierra 1500
  • 2011 GMC Sierra 1500
  • 2010 GMC Sierra 1500
  • 2009 GMC Sierra 1500
  • 2008 GMC Sierra 1500
  • 2007 GMC Sierra 1500


Customer Questions & Answers

Have a question about this product? Let one of our experts answer it for you!

We will respond with an answer ASAP.

Can i run a 285 55 20 tire with factory rims and no offsets or backspacing with this kit
The 285/55r 20 measure out at 32.3 X 11.2. This is a little too much tire to fit with out trimming. The biggest metric tire size that would fit without trimming on the factory rims is a 275/55r20, which is equal to 31.9 x 10.8
Can i run 275 60 r 20 or 275 65 r 20 with this lift kit
The largest tire that will fit with a 20" rim wil be the 275/55r20


  • 5.0 out of 3 Overall
  • 100% reviews recommend this product
Review Product
Super Easy
just follow the directions provided and you will be done in about 3 hours
Recommend this Product: YES
08 GMC Sierra
– Value
– Quality
– Installation
Great Addition to wife truck
We didn't want to get carried away with a lift kit being to high, but wanted to changed the stance of the truck, for a 4x4 it just sat a little two low, we pull atv trailers and did not want a leveling kit and remove the natural rake of the truck. This was the ticket, we are extremely pleased with this overall, from quality to result.
Recommend this Product: YES
2008 GMC Sierra 1500 4x4
– Value
– Quality
– Installation
Very Happy !
Im very happy with the quality as well as the ease of installation of these parts. Prompt delivery great price!
Recommend this Product: YES
2012 GMC Sierra
– Value
– Quality
– Installation