Kryptonite Stage 3 Leveling Kit with Fox 2.5 Performance Elite Shocks for 2019+ Chevy/GMC 1500 AT4/Trail Boss
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The Kryptonite Stage 3 FOX 2.5 Performance Elite Suspension Kit represents the highest level of bolt-on suspension performance available for 2019+ Chevrolet Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 models. Combining FOX’s premium Performance Elite reservoir shocks with Kryptonite’s heavy-duty boxed upper control arms, this complete suspension package is engineered for owners who demand exceptional ride quality, increased capability, and maximum control both on and off the pavement.
FOX Performance Elite Series shocks are built using technology developed through years of off-road racing competition. Featuring large-diameter 2.5” aluminum shock bodies, external reservoirs, and Internal Floating Piston (IFP) technology, these shocks provide increased oil and nitrogen capacity for superior heat management and consistent performance during extended use. The remote reservoir design helps resist shock fade while improving damping control in harsh environments.
What truly separates the Performance Elite series from standard shock options is the inclusion of Dual Speed Compression (DSC) adjusters. These externally adjustable controls allow drivers to fine-tune both low-speed and high-speed compression damping, providing the flexibility to optimize ride quality, towing performance, load carrying characteristics, or off-road handling based on individual needs.
To complement the upgraded FOX suspension, Kryptonite Upper Control Arms are included to maintain proper suspension geometry and ball joint operating angles at the increased ride height. Manufactured from laser-cut steel and robotically welded into a heavy-duty boxed design, these control arms provide the strength, reliability, and serviceability expected from Kryptonite Products.
Whether you’re building the ultimate daily driver, overland rig, tow vehicle, or weekend adventure truck, this complete suspension package delivers premium ride quality, outstanding durability, and race-inspired performance while providing clearance for up to a 33” tire.
The Kryptonite Stage 3 FOX 2.5 Performance Elite Suspension Kit represents the highest level of bolt-on suspension performance available for 2019+ Chevrolet Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 models. Combining FOX’s premium Performance Elite reservoir shocks with Kryptonite’s heavy-duty boxed upper control arms, this complete suspension package is engineered for owners who demand exceptional ride quality, increased capability, and maximum control both on and off the pavement.
FOX Performance Elite Series shocks are built using technology developed through years of off-road racing competition. Featuring large-diameter 2.5” aluminum shock bodies, external reservoirs, and Internal Floating Piston (IFP) technology, these shocks provide increased oil and nitrogen capacity for superior heat management and consistent performance during extended use. The remote reservoir design helps resist shock fade while improving damping control in harsh environments.
What truly separates the Performance Elite series from standard shock options is the inclusion of Dual Speed Compression (DSC) adjusters. These externally adjustable controls allow drivers to fine-tune both low-speed and high-speed compression damping, providing the flexibility to optimize ride quality, towing performance, load carrying characteristics, or off-road handling based on individual needs.
To complement the upgraded FOX suspension, Kryptonite Upper Control Arms are included to maintain proper suspension geometry and ball joint operating angles at the increased ride height. Manufactured from laser-cut steel and robotically welded into a heavy-duty boxed design, these control arms provide the strength, reliability, and serviceability expected from Kryptonite Products.
Whether you’re building the ultimate daily driver, overland rig, tow vehicle, or weekend adventure truck, this complete suspension package delivers premium ride quality, outstanding durability, and race-inspired performance while providing clearance for up to a 33” tire.
Kryptonite’s lifetime statement covers eligible steering/suspension components for the original purchaser; it excludes Heim-style joints, dust boots, shocks, sensor wires and bushings. Direct/authorized-dealer purchase, registration within 90 days and proof of purchase are required. Inspection and approval precede replacement; no parts-cost refund or collateral damages. Customer pays shipping both ways. Do not assume lifetime coverage for excluded or other product types.
Return and warranty information is based on what Kryptonite Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Kryptonite Products warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what Kryptonite Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Professional installation is recommended.
Universal product. Review all measurements and installation requirements before ordering.
- Return eligibility
- Kryptonite publishes 30 days from delivery for direct orders only; dealer purchases go through the dealer. Authorization, proof of purchase and new/unused original-packaged goods are required. Refunds incur minimum 25% restocking, potentially higher based on condition; the return form offers store credit without restocking. Shipping is not refunded and original free-shipping expense is deducted. Used/installed goods, custom orders, tools and gift cards are excluded. Contact FullSpecDiesel before returning. Based on what Kryptonite Products offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- Kryptonite Products
- Warranty duration
- Product-specific duration not stated; see supplier terms
- Compatibility
- Universal product — review all measurements
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- Kryptonite Products
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.