F250 / F350 2005-2024 Ford (with diesel engine) - 4.5" Lift Front Dual-Rate Coil Springs by Kryptonite

The Kryptonite KRFC45 4.5" Lift Dual Rate Lift Coil Springs are the ultimate upgrade for Ford F-250/F-350 Powerstroke Diesel 4x4 trucks. Designed to provide superior lift, durability, and ride quality, these springs offer rugged load-handling capabilities while maintaining a smooth and controlled driving experience.

Engineered with a true dual-rate spring design, these coils deliver the perfect balance between stability and comfort. The multi-rate construction ensures excellent handling and performance while minimizing spring sag over time. Built with top-rated materials and shot-peened for enhanced durability, these springs provide long-lasting strength and reliability for any terrain or workload. Featuring a black powder-coated finish for superior corrosion resistance, these springs are designed to withstand harsh environments. With a direct-fit installation, they offer 4.5" of lift without compromising suspension integrity, making them a premium upgrade over OEM components.

Manufactured in the USA, these coil springs are built for heavy-duty applications and consistent performance. Backed by a lifetime warranty for the original purchaser, Kryptonite suspension components are covered against manufacturer defects, premature wear, or breakage. To qualify, products must be purchased from an authorized dealer, with warranty registration completed within 90 days of purchase.

Features and Benefits:

• Designed for Ford F-250/F-350 Powerstroke Diesel 4x4 trucks
• Provides 4.5" of lift while maintaining suspension integrity
• True dual-rate spring design for a balance of stability and comfort
• Rugged load-handling capabilities with minimal spring sag over time
• Multi-rate spring construction for optimal handling and ride quality
• Shot-peened for enhanced durability and long-lasting performance
• Powder-coated black finish for superior corrosion resistance
• Direct-fit installation with no modifications required
• Offers improved strength and rigidity over OEM components
• Built for heavy-duty applications and demanding workloads
• Manufactured in the USA for premium quality and craftsmanship
• Backed by a lifetime warranty for the original purchaser
• Warranty covers manufacturer defects, premature wear, and breakage
• Requires purchase from an authorized dealer for warranty eligibility
• Warranty registration must be completed within 90 days of purchase