Kryptonite 4.5"/5.5" Lift Dual Rate Coil Springs for 2005-2026 Ford F-250/F-350
- Ford F-250 Super Duty2005–2025
- Ford F-350 Super Duty2005–2025
- Ford F-450 Super Duty2017+
- Ford F-550 Super Duty2017+
Before you order
Not sure it fits? Ask us.
Send your year, model and engine. We'll confirm the part number before you buy.
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Split it into instalments
Delivery
Australia-wide
Usually 3–7 business days
Genuine
US & Canadian brands
Not copies or knock-offs
Support
Real people, no bots
20+ years fitting this gear
Aussie owned. 25 years in the auto trade.
About us
Normally ships within 3–8 business days
Right-hand-drive converted truck? Steering linkage, track bars and stabilisers are designed for factory left-hand-drive trucks. Some RHD conversions change the steering layout, so contact us with your conversion details before ordering and we'll confirm fitment.
Fits:
2005-2025 Ford F-250 Super Duty Powerstroke
2005-2025 Ford F-350 Super Duty Powerstroke
2017+ Ford F-450 Super Duty Powerstroke
2017+ Ford F-550 Super Duty Powerstroke
Important Fitment Details:
When installing these coils on F-450/F-550 Trucks, load ratings will be reduced
SOLD AS A PAIR
THIS IS NOT A COMPLETE LIFT KIT*
Features:
- 4.5" of Lift 2005-2019, 5.5" of Lift 2020+
- Multi-Rate Spring, Designed for the Powerstroke
- Powder Coated Black Finish
- Shot Peened for Durability
- Improved Strength and Rigidity over OEM
- Direct Fit Install
Description:
After years of testing, from daily driving to harsh off road terrain, heavy hauling and everything in between, the Kryptonite 4.5"/5.5" Dual Rate Lift Coil Spring set is now available. This is the most durable and premium spring option on the market. Designed with heavy duty truck use in mind, this spring provides rugged load handling capabilities while maintaining an extremely comfortable ride. Using top rated materials we can produce a plush ride with minimal spring sag. Our true Dual Rate Spring can truly provide the best of both worlds. Mile after mile our springs will hold up to any truck, and any job. Installing these coils on a gas Super Duty will result in a VERY stiff ride. We DO NOT recommend this whatsoever.
4.5" vs 5.5" Explained
You may notice our springs, and other manufacturers, have Ford springs listed as 4.5"/5.5", depending on the year. The answer is quite simple, the 2020 and later Ford Super Duty trucks sat 1" lower from the factory than its predecessors. This means the same 4.5" lift coil on a 2005-2019 Super Duty will provide 5.5" of lift on the 2020+ Super Duty. No other parts changed, the truck just started out lower than before. The only time this is not true is for the 2020+ Super Duty TREMOR, these come from the factory with a 2" lift/level, and makes them 1" taller than a stock height 2005-2019. Using our 4.5"/5.5" spring will lift the front of a 2020+ TREMOR 3.5".
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].