Kryptonite Stage 2 Leveling Kit with Fox Performance Series HTO Shocks for 2017-2026 Ford Super Duty F-250/F-350

The Kryptonite Stage 2 Leveling Kit with FOX 2.5 Performance Series HTO Shocks is a premium suspension system engineered specifically for 2017+ Ford Super Duty diesel trucks. Combining Kryptonite’s proven leveling components with FOX’s latest Hydraulic Top Out (HTO) shock technology, this package delivers exceptional ride quality, improved suspension control, and outstanding durability for trucks that tow, haul, commute, and explore beyond the pavement. At the core of the system are Kryptonite’s dual-rate coil springs, engineered around the unique weight and suspension characteristics of the Super Duty platform. Unlike generic leveling springs, these coils improve ride comfort and suspension compliance while maintaining the load-carrying capability these trucks are known for. Whether towing heavy trailers, hauling equipment, or driving unloaded, the spring design delivers a controlled, predictable ride without compromising capability. The centerpiece of this kit is FOX’s all-new 2.5 Performance Series HTO shocks. Built around a large 2.5-inch Type II anodized aluminum monotube body with an Internal Floating Piston (IFP), these shocks offer significantly greater oil capacity and heat dissipation than traditional 2.0-inch shocks for consistent damping performance under demanding conditions. FOX’s innovative Hydraulic Top Out (HTO) technology adds position-sensitive rebound damping that slows the shock as it approaches full extension, reducing harsh top-out events while dramatically improving ride comfort and vehicle composure. Combined with larger pistons and application-specific valving developed exclusively for the Super Duty platform, the HTO shocks provide remarkable small-bump compliance while maintaining exceptional control through larger impacts, washboard roads, and uneven terrain. The result is a suspension that feels refined during everyday driving while remaining capable when the road ends. To maintain proper steering geometry after leveling, the kit includes Kryptonite 2-degree caster correction shims. These precision-machined shims restore factory caster angles lost during the leveling process, improving straight-line stability, steering feel, return-to-center characteristics, and overall driver confidence. Billet aluminum bump stop spacers are also included to maintain proper suspension travel and ensure the bump stops engage before the shocks reach full compression. Combined with premium hardware throughout, this complete suspension system delivers outstanding ride comfort, predictable handling, improved steering stability, and long-term reliability. For Super Duty owners looking for one of the best ride quality upgrades available without the complexity of external reservoirs or adjustable dampers, the Kryptonite Stage 2 Leveling Kit with FOX 2.5 Performance Series HTO Shocks provides an exceptional balance of comfort, control, durability, and value. 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.