Kryptonite Stage 3 Leveling Kit with Fox 2.5 Performance Elite Shocks for 2017-2025 Ford Super Duty F250/F350
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
This product is currently unavailable.
Ships directly from the supplier. The final shipping cost will be shown before payment.
- Ships from Kryptonite Products
The Kryptonite Stage 3 Leveling Kit with FOX Performance Elite 2.5 DSC Shocks is a complete premium front suspension system engineered specifically for 2017-2025 Ford Super Duty diesel trucks. Designed for owners who demand maximum ride quality, adjustability, suspension performance, and steering precision, this package combines Kryptonite’s heavy-duty suspension components with FOX’s flagship Performance Elite shock technology to create a suspension system equally at home towing heavy loads, traveling long distances, or tackling demanding off-road terrain.
At the core of the system are Kryptonite’s dual-rate coil springs, engineered specifically around the weight and suspension characteristics of the Power Stroke platform. Unlike generic leveling springs, these coils improve ride comfort and suspension compliance while maintaining the load-carrying capability Super Duty owners rely on. Whether hauling equipment, towing heavy trailers, or driving unloaded, the spring design provides exceptional ride quality without sacrificing stability or capability.
Handling suspension duties are FOX Performance Elite 2.5 DSC shocks. Built around a large 2.5-inch aluminum shock body with external remote reservoirs, these premium shocks offer substantially increased oil capacity for superior heat dissipation and fade resistance during extended towing, aggressive off-road driving, and high-speed travel. FOX’s Internal Floating Piston (IFP) design separates the shock oil from the high-pressure nitrogen chamber to maintain consistent damping performance, while the Dual Speed Compression (DSC) adjusters allow independent tuning of low-speed and high-speed compression damping. This gives drivers the ability to fine-tune ride comfort, body control, and impact absorption for varying loads, terrain, and driving styles, delivering exceptional confidence in every driving condition.
Kryptonite heavy-duty radius arms further enhance suspension performance by correcting front suspension geometry while significantly increasing strength and rigidity over factory components. Their fully boxed construction, internal gusseting, and adjustable caster correction allow steering geometry to be precisely dialed in after lifting, improving straight-line tracking, reducing steering wander, and enhancing return-to-center characteristics. A heavy-duty adjustable track bar properly re-centers the front axle after leveling, while billet 6061 aluminum bump stop spacers maintain proper suspension travel and ensure controlled bump stop engagement.
Combined with premium hardware throughout, this complete suspension system delivers exceptional ride quality, precise steering response, superior suspension control, and long-term durability. Whether your Super Duty is built for towing, overlanding, daily driving, or serious off-road use, the Kryptonite Stage 3 Leveling Kit with FOX Performance Elite 2.5 DSC Shocks provides the adjustability, capability, and performance expected from a top-tier suspension system.
2.5” vs 3.5” Lift Explained
Ford changed the factory ride height of the Super Duty platform starting in 2020, lowering the front suspension approximately 1” compared to 2005-2019 trucks. Because of this, the exact same Kryptonite leveling spring will produce different lift heights depending on model year.
2005-2019 Super Duty trucks will see approximately 2.5” of front lift
2020+ Super Duty trucks will see approximately 3.5” of front lift
No changes were made to the spring itself, the newer trucks simply start from a lower factory ride height.
2020+ Tremor models already include a factory lifted suspension package and sit approximately 2” taller than a standard Super Duty from the factory. On Tremor-equipped trucks, these springs will provide approximately 1.5” of additional front lift.
The Kryptonite Stage 3 Leveling Kit with FOX Performance Elite 2.5 DSC Shocks is a complete premium front suspension system engineered specifically for 2017-2025 Ford Super Duty diesel trucks. Designed for owners who demand maximum ride quality, adjustability, suspension performance, and steering precision, this package combines Kryptonite’s heavy-duty suspension components with FOX’s flagship Performance Elite shock technology to create a suspension system equally at home towing heavy loads, traveling long distances, or tackling demanding off-road terrain.
At the core of the system are Kryptonite’s dual-rate coil springs, engineered specifically around the weight and suspension characteristics of the Power Stroke platform. Unlike generic leveling springs, these coils improve ride comfort and suspension compliance while maintaining the load-carrying capability Super Duty owners rely on. Whether hauling equipment, towing heavy trailers, or driving unloaded, the spring design provides exceptional ride quality without sacrificing stability or capability.
Handling suspension duties are FOX Performance Elite 2.5 DSC shocks. Built around a large 2.5-inch aluminum shock body with external remote reservoirs, these premium shocks offer substantially increased oil capacity for superior heat dissipation and fade resistance during extended towing, aggressive off-road driving, and high-speed travel. FOX’s Internal Floating Piston (IFP) design separates the shock oil from the high-pressure nitrogen chamber to maintain consistent damping performance, while the Dual Speed Compression (DSC) adjusters allow independent tuning of low-speed and high-speed compression damping. This gives drivers the ability to fine-tune ride comfort, body control, and impact absorption for varying loads, terrain, and driving styles, delivering exceptional confidence in every driving condition.
Kryptonite heavy-duty radius arms further enhance suspension performance by correcting front suspension geometry while significantly increasing strength and rigidity over factory components. Their fully boxed construction, internal gusseting, and adjustable caster correction allow steering geometry to be precisely dialed in after lifting, improving straight-line tracking, reducing steering wander, and enhancing return-to-center characteristics. A heavy-duty adjustable track bar properly re-centers the front axle after leveling, while billet 6061 aluminum bump stop spacers maintain proper suspension travel and ensure controlled bump stop engagement.
Combined with premium hardware throughout, this complete suspension system delivers exceptional ride quality, precise steering response, superior suspension control, and long-term durability. Whether your Super Duty is built for towing, overlanding, daily driving, or serious off-road use, the Kryptonite Stage 3 Leveling Kit with FOX Performance Elite 2.5 DSC Shocks provides the adjustability, capability, and performance expected from a top-tier suspension system.
2.5” vs 3.5” Lift Explained
Ford changed the factory ride height of the Super Duty platform starting in 2020, lowering the front suspension approximately 1” compared to 2005-2019 trucks. Because of this, the exact same Kryptonite leveling spring will produce different lift heights depending on model year.
2005-2019 Super Duty trucks will see approximately 2.5” of front lift
2020+ Super Duty trucks will see approximately 3.5” of front lift
No changes were made to the spring itself, the newer trucks simply start from a lower factory ride height.
2020+ Tremor models already include a factory lifted suspension package and sit approximately 2” taller than a standard Super Duty from the factory. On Tremor-equipped trucks, these springs will provide approximately 1.5” of additional front lift.
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.
- 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
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- Signature delivery required
- 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.