1999-2006 GMC Sierra 1500/2500 (6 lug) 4x4 - Tuff Country 2" Front Leveling Kit (Torsion Bar Keys)

Tuff Country GMC Sierra 1500 2
Tuff Country - 12903-gmc-sierra-1500
Authorized Dealer
Tuff Country #12903
Tuff Country - 12903-gmc-sierra-1500
Authorized Dealer
Sale Price:
  • $101.56
$126.95 Save: $25.39 (20%)
Save $10.16 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 EZ-Ride Suspension's GMC Sierra 1500 torsion bar keys (leveling kit) are designed to level trucks equipped with factory torsion bars. These easy to install replacement torsion bar keys reindex the factory torsion bars which levels the truck without "cranking up" the factory torsion bars.

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!

Features and Benefits

  • Bolt-on installation
  • Level front of your GMC Sierra 1500 with rear
  • No need to "crank up" torsion bars
  • Proudly Made in the USA - (many other brands are not)
  • Lifetime Warranty

Installation Notes

1. Once installed torsion bar keys (regardless of brand) can result in a harsher ride.
2. New extended shocks are recommended for this lift kit.
3. Torsion bar keys are designed to install with a stock suspension only.  Do not use with other types of lift kits.  Will void warranty.

Tech Specs

Download Instructions: 12903 Instructions
Recommended Tire Size: N/A
Amount of Lift: 2" Front / 0" Rear
Items Included: 2) Torsion Bar Keys  
Weight: 9.00 lbs.
Part 12903 fits:
  • 2006 GMC Sierra 1500
  • 2005 GMC Sierra 1500
  • 2004 GMC Sierra 1500
  • 2003 GMC Sierra 1500
  • 2002 GMC Sierra 1500
  • 2001 GMC Sierra 1500
  • 2000 GMC Sierra 1500
  • 1999 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.


  • 4.5 out of 2 Overall
  • 100% reviews recommend this product
Review Product
Looks great
It seems to me that GMCs just sag in the front. I purchased this kit for my GMC and it has made a big difference. Love the look of it.
Recommend this Product: YES
2003 GMC Sierra 1500
– Value
– Quality
– Installation
USA made
I found another brand cheaper then the Tuff Country level kit but it was made in china, made in the USA matters to me and my family as I am retired military, I am a mechanic now so the install was some what simple, I would recommend this product and company.
Recommend this Product: YES
2005 GMC
– Value
– Quality
– Installation