2020-2025 Duramax L5P Kryptonite Stage 4 Leveling Kit w/ Fox Shocks (KR20STAGE4FOX)
The Kryptonite Stage 4 Leveling Kit featuring Fox 2.5 HTO Performance Series shocks is the ultimate suspension upgrade for 2020–2025 GM HD trucks. Designed for performance, strength, and real-world reliability, this package delivers more than just ride height—it delivers capability.
Kryptonite’s forged torsion keys lift the front end up to 2 inches while maintaining OEM ride characteristics. The included boxed upper control arms correct suspension geometry and improve articulation. For damping, the Fox 2.5 HTO shocks utilize Hydraulic Top Out technology to control rebound and reduce harsh impacts—perfect for trucks running oversized tires or frequent off-road use.
This kit is engineered for easy installation, and every component is made to handle years of hard use without compromise.
- Forged torsion keys – 25% stronger than OEM
- Kryptonite boxed upper control arms with pre-installed bushings and ball joints
- FOX 2.5 HTO Performance Series shocks – engineered for lifted trucks
- Hydraulic Top Out (HTO) technology – reduces harsh top-outs and enhances comfort with aggressive tires and taller ride height
- Maintains OEM ride quality
- Bolt-on installation – no cutting required
- Lifetime Warranty – covers breakage, wear, and defects
- 1 x Kryptonite Upper Control Arm Pair
- 4 x Control Arm Sleeves
- 8 x Polyurethane Control Arm Bushings
- 2 x Kryptonite Bolt-In Upper Ball Joints
- 1 x Hardware Package
- 2 x Forged Leveling Keys
- 2 x Fox 2.5 HTO Performance Series Front Shocks – Part# KRS4010
- 2 x Fox 2.5 HTO Performance Series Rear Shocks – Part# KRS4009
Fits:
2020–2025 Chevy 2500HD / 3500HD
2020–2025 GMC 2500HD / 3500HD
Important Fitment Details:
Will NOT Fit: AT4X & ZR2 models equipped with DSSV shocks
- Provides up to 2” of front lift
- Allows clearance for 35” tires with no trimming
- You can fit up to a 37" tire with some trimming
- Not compatible with DSSV-equipped AT4X or ZR2 trucks
- Exceeding 2” of front lift may cause shock failure
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By purchasing, you acknowledge and accept that variations may occur and release OCDiesel from any liability related to product appearance differences.
Order Processing Time:
Orders are typically processed within 24-48 hours after the order has been placed.
Custom or special order items may take longer to process, typically 3-5 business days depending on the product and customization required.
Shipping Methods:
Standard Shipping (3-7 business days - location dependent)
Express Shipping (1-2 business days- location dependent)
Packaging:
All parts are securely packaged to better prevent any damage during transit. Fragile or high-value parts will be packaged with additional protective materials, such as bubble wrap or foam padding.
Shipping Rates:
Shipping rates vary based on the size, weight, and destination of the package. You can view the estimated shipping costs for your order during the checkout process before placing your order.
Order Tracking:
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USA Shipping:
We ship to the USA! (Except California) Please note that USA shipping rates and delivery times may vary based on destination. Customers are responsible for any customs fees, import taxes, or additional charges that may apply.
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