2005-2024 Powerstroke 4.5" Dual Rate Coil Springs (KRFC45)

Fits

We've all seen it: a lift kit made with cheap parts, and you always want to make sure your truck doesn't end up that way! Kryptonite makes sure they build parts they can stand behind! Their quality is almost unsurpassed, which is why if you walk around our own parking lot, you'll see Kryptonite parts on our own trucks. 

These dual rate coil springs 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. Their true Dual Rate spring can provide the best of both worlds. Using top-rated material they can have produced a plush ride with minimal spring sag.

Part Number: KRFC45

• 4.5" of Lift
• Multi-Rate Spring
• Powder Coated Black Finish
• Shot Peened for durability 
  
• Improved Strength and Rigidity over OEM
• Direct-Fit Install
• Made in the USA

• Sold as a pair, coil spring set only. This is not a complete lift kit.
• On F-450/F-550 Trucks, load ratings will be reduced

Kryptonite No Fine Print Lifetime Warranty: Kryptonite steering and suspension components are warrantied for life to their original purchaser. This warranty is against any manufacturer defects, premature wear, or breakage. Race it, jump it, off-road it, wreck it, lift it- I think you get it? We don't care. If you can break it, we will replace it. Warranty Excludes Heim Joints.
Your Kryptonite products must be purchased from an authorized dealer and must complete warranty registration within 90 days of purchase.