2020-2025
2015-2019
2007-2014
2001-2006
Installation Time
(approx) a Day
Difficulty Level:
Mechanical expertise or professional installation required.
Guaranteed 12/24 Delivery Still Available see item page for details! available on most items - Details
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Find 6 Inch to 8 Inch Lift Kits for your Sierra 2500
SuperLift 6-Inch Knuckle Suspension Lift Kit with Bilstein Shocks (20-25 Sierra 2500 HD, Excluding Denali)Find parts that fit my vehicle
Item HG7725
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$2,320.49
32 Reviews
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-15% $2,320.49 Was $2,729.99
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Complete 6-inch Lift Kit
- Front and Rear Bilstein 5100 Shocks
- Maximizes Ground Clearance while Maintaining Ride & Handling
- Made in the USA
- Lifetime Limited Warranty
- Accommodates up to 37-Inch Tires
- Retains OEM Caster and Camber Alignment Specifications
- SUPERLIFT PART K255B
- Compatible with Stabilitrac® and Anti-Skid Controls
- Fits 2020-2025 GMC Sierra 2500HDs
| Brand | SuperLift |
| Lift Height | 6.00 Inch |
| Lift Kit Type | Suspension Lift |
| Lift Kit Includes Shocks | Shocks Included |
Description
Designed for the Rough Stuff. Your 2500 was redesigned by GM in a big way - there’s no better way to complement the aggressive styling than with a significant height increase. This SuperLift 6-Inch Knuckle Suspension Lift Kit with Bilstein Shocks uses a “No Drop” torsion bar relocation bracket that keeps the torsion bar assembly safe for off-roading while maximizing frame ground clearance. This Superlift Kit can expand your tire choices up to 37-inches while keeping perfect alignment specifications with CNC machined steering knuckles and heavy-duty lower control arm crossmembers. This kit includes steering knuckles, crossmembers, torsion bar brackets, front sway bar links, belly pan, brake line brackets, bump stops, rear block kit, and shocks; all required parts to make sure your Sierra handles and performs like a stock truck.
Bilstein Shocks. Bilstein 5100 Series shock absorbers are a direct fit for your lifted GM 2500. These shock absorbers feature a monotube design that provides consistent fade-free performance. In addition, 5100 Series shock absorbers utilize a unique, velocity-sensitive, digressive piston that reacts to changing road conditions - more firm at low speeds while remaining comfortable on the highway. Bilstein 5100 Series shock absorbers significantly improve ride quality, handling, and comfort.
Rear Lift. A fabricated rear block provides the rear lift, while the primary axle U-bolts are found in the upper and lower plates, with the secondary U-bolts attached to the OE leaf spring to reduce pinion wrap. An axle-mounted, compression stop system prevents over-compression.
Installation. Installation time is estimated at 9 hours with mechanical expertise or a professional installation. No welding is required. This kit is compatible with factory Stabilitrac® and anti-skid control features to prevent irritating dash lights.
Limited Lifetime Warranty. Superlift, LLC, is so confident in its suspension products that they carry a limited lifetime warranty on fabricated items and a 1-year warranty on all wearable items such as bushings, stabilizers, and shocks. Subject to the terms and conditions, please contact the manufacturer for full warranty details.
Application. This Superlift 6-inch Knuckle Suspension Lift Kit fits all 2020-2025 GMC Sierra 2500HD trucks. This kit is not compatible with trucks equipped with Magneride or factory wheels. Additionally, this kit is not designed for dually trucks.
Fitment:
- 2020 GMC Sierra 2500
- 2021 GMC Sierra 2500
- 2022 GMC Sierra 2500
- 2023 GMC Sierra 2500
- 2024 GMC Sierra 2500
- 2025 GMC Sierra 2500
SuperLift K255B
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (2) Shock Absorber, Front, Bilstein
- (2) Shock Absorber, Rear, Bilstein
- Shock Bushings and Sleeves hardware bag
- (1) Knuckle, Driver Side
- (1) Knuckle, Passenger Side
- (1) Differential Drop, Driver Side
- (1) Differential Drop, Passenger Side
- (1) Crossmember, Front
- (1) Differential Hardware Bag
- (1) Crossmember, Rear
- (2) Bump Stop, Front
- (1) 1/2" Rivet Nut Kit
- (1) 3/8" Rivet Nut Kit
- (1) Hardware Bag; nuts and bolts
- (1) Torsion Bar Relocation, Driver Side
- (1) Torsion Bar Relocation, Passenger Side
- (2) Torsion Crush Sleeve
- (1) Belly Pan
- (1) Front Brake line Bracket, Driver
- (1) Front Brake line Bracket, Passenger
- (2) Sway Bar End Link
- (1) Sway Bar Bracket Driver
- (1) Sway Bar Bracket Passenger
- (1) Torsion Bar Hardware Bag
- (1) Hardware Bag
- (1) Hardware Bag-Sway bar
- (1) Rear Brake Line
- (1) Rear ABS Line Relocation
- (2) Rear Block
- (1) Rear Bump Stop Bracket, Driver
- (1) Rear Bump Stop Bracket, Passenger
- (4) U-Bolt
- (1) 3/4 Flange Nut Kit
- (1) Rear bump stop hardware bag
4.8
Customer Reviews (32)
Questions & Answers
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