Installation Time
(approx) a Day
Difficulty Level:
Light to Moderate mechanical skill required.
FREE 1 to 3-Day Delivery on Orders $149+ Details
Rough Country Suspension 6-Inch Suspension Lift Kit with Front Strut Spacers and Premium N3 Rear Shocks (25-26 2.7L, 3.0L Duramax Sierra 1500 w/ Mono-Leaf Springs, Excluding AT4 & Denali)Find parts that fit my vehicle
Item S591611
Our Price
$1,299.95 kit
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$65.00 Available in AT Cash Rewards.
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Explore New Heights With A 6-Inch Suspension Lift Designed For 2025-2026 GMC Sierra 1500 4WD Models With OEM Mono-Leaf Springs
- Innovative Design Maintains Suspension Geometry With Durable Heavy-Duty Cast Knuckles And Fabricated Crossmembers
- Provides Clearance For 35-Inch Tires Without Additional Modifications
- Estimated Installation Time Of 8-10 Hours Requires Minor Cutting, Drilling, And A Strut Compressor
- Includes Limited Lifetime Replacement Warranty Against Manufacturer Defects
- Enhanced Stance With A Lifted And Leveled Front-To-Rear Presence
- High-Clearance Crossmember Design For Superior Handling And Off-Road Durability
- Retains Stock Track Width For Proper Wheel Alignment And Stability
- 100% Laser-Cut Materials Using Advanced CAD Technology For Precise Fit
- Heavy-Duty Fabricated Lift Blocks For Strength And Longevity
- Requires Moderate Mechanical Skill For Installation
- Not Compatible With Denali Or Denali Ultimate Models Equipped With Adaptive Ride Control
- Not Compatible With AT4 And AT4X Models Due To Factory Lift And Suspension Differences
- Does Not Fit Factory Wheels; Requires 20-Inch Or Larger Aftermarket Wheels With 4.5-Inch Backspacing
- Some Aftermarket Wheels May Require Up To 0.25-Inch Wheel Spacers
- Fitment Limited To 2025-2026 GMC Sierra 1500 4WD Models Equipped With 2.7L Gas Or 3.0L Duramax Diesel Engines And OEM Mono-Leaf Springs, Excluding AT4, AT4X, Denali, And Denali Ultimate With Adaptive Ride Control
| Brand | Rough Country Suspension |
| Lift Height | 6.00 Inch |
| Lift Kit Type | Spacer Lift |
| Lift Kit Max Tire Size | 37 Inch |
| Brand of Shocks | Rough Country |
| Rear Lift Type | Spacer |
| Shock Style | Non-Reservoir |
Description
High-Performance Lift Kit. The Rough Country Suspension 6-Inch Lift Kit with Front Strut Spacers and Premium N3 Rear Shocks is engineered to elevate the 2025-2026 GMC Sierra 1500 4WD models equipped with OEM mono-leaf springs, allowing for larger tires and an enhanced stance. It improves off-road capability and vehicle presence by raising the suspension while maintaining suspension geometry to support stable handling.
Construction and Appearance. Built from heavy-duty steel components including cast knuckles and fabricated lift blocks, the kit uses 100% laser-cut materials made with advanced CAD technology. The design prioritizes durability and precise fitment, delivering a rugged yet factory-quality finish suitable for demanding terrain.
Installation. Installation requires moderate mechanical skills and takes approximately 8 to 10 hours. The process involves minor cutting, drilling, and the use of a strut compressor to accommodate the front strut spacers and other components.
Warranty. This product includes a limited lifetime replacement warranty against manufacturer defects.
Application. Specifically designed for 2025-2026 GMC Sierra 1500 4WD models equipped with 2.7L gas or 3.0L Duramax diesel engines and OEM mono-leaf springs. The kit is not compatible with AT4, AT4X, or Denali and Denali Ultimate models equipped with Adaptive Ride Control due to factory suspension differences.
Rough Country Suspension 26631D_A
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Install Details & What's in the Box
Installation Info
What's in the Box
- (2) Upper Strut Spacers
- (2) Front Cast Knuckles
- (1) Front Crossmember
- (1) Rear Crossmember / Differential Drop Brackets
- (1) Differential Skid Plate
- (1) Sway Bar Drop Brackets Kit
- (2) Premium N3 Rear Shock Absorbers
- Hardware, Brackets & Mounting Components
- Instructional Manual
Tech Guides:
- Lift Kit vs Leveling Kit: Which Upgrade Is Right for Your Truck?
- How Much Lift Does My Truck Need? Picking the Right Lift Height
- Pros and Cons of Lifting Your Truck: What Every Owner Should Know
- Towing Suspension Upgrades: Suspension Components to Improve Towing Capability
- Lift Kits - How Adding Ground Clearance Makes Trucks More Capable Off-Road
- Do Lifted Trucks Use More Fuel? MPG Loss by Lift Height, Tire Size, and How to Save
- What Is Rake? How Leveling Your Truck Improves Appearance
- FAQ What Are The Best Suspension Systems? How Suspension Systems Work
- Off-Road Suspension 101: What To Know Before You Go
- Lift Kits vs. Leveling Kits: What’s the Difference?
- 8 Most Popular Rides to Upgrade Suspensions in 2021
- GMC Sierra 1500 Lift Kits Explained
4.8
Customer Reviews (32)
Questions & Answers
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Will It Fit My Sierra 1500
- 2.7L I4 - 25, 26
- 3.0L I6 Duramax - 25, 26
