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

Fits:

2017-2026 Ford F-250 Super Duty 6.7L Power Stroke

2017-2026 Ford F-350 Super Duty 6.7L Power Stroke

Important Fitment Details:

• Does not fit on gasoline powered trucks. 
• This kit will allow your to upgrade to a 35"x12.5 Tire with little to no trimming. You can fit up to a 37" with additional fender and front bumper clearance required. 
• Cab and Chassis Models - May not allow fitment of the rear shocks. Contact us for more details.

Features:

• Complete Suspension System – Includes dual-rate coil springs, FOX 2.5 HTO shocks, heavy-duty radius arms, bump stop spacers, and all required installation hardware for a properly matched leveling system
• Dual-Rate Coil Springs – Designed specifically for Power Stroke-equipped Super Duty trucks to improve ride quality while maintaining towing and hauling capability
• FOX 2.5 Performance Series HTO Shocks – Large-body 2.5” monotube shocks feature FOX’s innovative Hydraulic Top Out (HTO) technology, delivering exceptional small-bump compliance, smoother rebound control, reduced top-out harshness, and increased confidence on and off the road.
• Caster Correction Shims- Helps restore proper steering geometry and improve straight-line stability after lifting
• Improved Ride & Handling – Components are engineered to work together for predictable on-road manners and increased confidence off-road
• 6061 Billet Bump Stop Spacers – Maintains proper bump stop engagement and suspension travel on leveled applications
• Corrosion Resistant Shock Construction – Clear-anodized 6061-T6 aluminum shock bodies resist rust and improve heat dissipation compared to traditional steel-body shocks
• Direct Bolt-On Installation – No cutting, welding, or fabrication required

Description:

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.

Includes:

• Fox 2.5 HTO Performance Series Front Shocks - Part# KRS002
• Fox 2.5 HTO Performance Series Rear Shocks - Part# KRS001
• Kryptonite Bump Stop Spacer Kit - Part# KRFB25
  
• Kryptonite Coil Springs - Part# KRFC25
• Kryptonite Caster Correction Shims - Part# KRP0365
• Kryptonite Adjustable Track Bar Kit - Part# KRFTB17-2

Instructions:

Click Here For Installation Guide

KRFTB17-2 - Click Here For Installation Guide

Warranty:

(Kryptonite No Fine Print Lifetime Warranty)
Kryptonite Steering & Suspension components are warrantied for life to their original purchaser. This warranty covers manufacturer defects, premature wear, or breakage. Race it, jump it, off‑road it, wreck it, lift it—we don’t care. If you can break it, we’ll replace it.

Your Kryptonite products must be purchased through an Authorized Dealer, and Warranty Registration completed within 90 days of purchase. Complete warranty details can be found [here].