Kryptonite Stage 3 Leveling Kit with Fox 2.5 Shocks for 2019+ Chevy/GMC 1500 AT4/Trail Boss
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- Ships from Kryptonite Products
The Kryptonite Stage 3 FOX 2.5 Suspension Kit is engineered specifically for 2019+ Chevrolet Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 owners seeking premium ride quality, improved vehicle control, and increased capability both on and off-road. This complete suspension package combines FOX 2.5 Performance Series front coil-overs, matched FOX rear Performance Series shocks, and Kryptonite’s heavy-duty boxed upper control arms to create a suspension system capable of handling everything from daily driving and towing to demanding off-road conditions.
At the heart of the system are FOX 2.5 Performance Series coil-overs, featuring large-diameter impact-extruded 6061-T6 aluminum bodies that increase oil capacity and cooling efficiency compared to smaller shock designs. FOX’s Internal Floating Piston (IFP) monotube technology separates shock oil from the high-pressure nitrogen charge, reducing aeration and ensuring consistent damping performance under heavy use. Race-developed high-flow pistons and application-specific valving provide a comfortable ride on the street while maintaining excellent control over rough terrain.
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 your truck is used for commuting, towing, overlanding, or weekend adventures, this complete suspension package delivers improved comfort, increased confidence, and the durability needed to tackle demanding conditions while providing clearance for up to a 33” tire.
The Kryptonite Stage 3 FOX 2.5 Suspension Kit is engineered specifically for 2019+ Chevrolet Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 owners seeking premium ride quality, improved vehicle control, and increased capability both on and off-road. This complete suspension package combines FOX 2.5 Performance Series front coil-overs, matched FOX rear Performance Series shocks, and Kryptonite’s heavy-duty boxed upper control arms to create a suspension system capable of handling everything from daily driving and towing to demanding off-road conditions.
At the heart of the system are FOX 2.5 Performance Series coil-overs, featuring large-diameter impact-extruded 6061-T6 aluminum bodies that increase oil capacity and cooling efficiency compared to smaller shock designs. FOX’s Internal Floating Piston (IFP) monotube technology separates shock oil from the high-pressure nitrogen charge, reducing aeration and ensuring consistent damping performance under heavy use. Race-developed high-flow pistons and application-specific valving provide a comfortable ride on the street while maintaining excellent control over rough terrain.
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 your truck is used for commuting, towing, overlanding, or weekend adventures, this complete suspension package delivers improved comfort, increased confidence, and the durability needed to tackle demanding conditions 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.