Fits: 2020–2025 Chevrolet / GMC 2500HD / 3500HD
Will NOT Fit: AT4X & ZR2 models equipped with DSSV shocks 

IMPORTANT FITMENT DETAILS:

• Provides up to 2” of front lift
• Allows clearance for up to 34” tires
• Not compatible with DSSV-equipped AT4X or ZR2 trucks
• Exceeding 2” of front lift may cause shock failure

FEATURES:

• 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

DESCRIPTION:

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.

INCLUDES:

• 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

DOWNLOAD CONTROL ARM INSTALLATION INSTRUCTIONS HERE

DOWNLOAD LEVELING KEY INSTALLATION INSTRUCTIONS HERE

(Kryptonite No Fine Print Lifetime warranty)
Kryptonite steering and suspension components are warrantied for life to their original purchaser. This warranty is against any manufacturer defects, premature wear or breakage. Race it, jump it, off road it, wreck it, lift it, I think you get it? We don't care. If you can break it we will replace it. 

Your Kryptonite products must be purchased from an authorized dealer, and must complete warranty registration within 90 days of purchase.