ReadyLift 6 Inch Coil Spring Lift Kit Ford Super Duty and F350 is a complete and properly engineered 6-inch suspension upgrade for Power Stroke diesel 4WD single rear wheel owners who want serious ground clearance, clearance for 37-inch tires, and a confident and controlled ride on the street and on the trail without structural modifications to the factory truck. Part number 49-23620: This system delivers a true 6-inch front lift through precision-tuned coil springs, includes four Falcon 1.1 monotube shocks for controlled on-road and off-road performance, and uses radius arm drop brackets to correct caster for proper alignment and tracking after the lift is installed. At IMM Hawaii Parts, we carry this kit for Super Duty diesel owners who want the most complete and properly matched 6-inch lift solution available for the 2023 and newer F-250 and F-350 platforms.
ReadyLift 6 Inch Coil Spring Lift Kit Ford Super Duty With Falcon 1.1 Monotube Shocks
All four Falcon 1.1 monotube shocks in this system are tuned specifically for the 2023 through 2026 Super Duty F250 and F350 running 6 inches of lift. Monotube construction keeps shock oil and gas completely separated through the full stroke, preventing aeration and delivering consistent damping performance through sustained towing, hauling, and off-road use where heat buildup would cause lesser shocks to fade and perform inconsistently. The Falcon 1.1 shocks provide controlled and composed damping on paved highways during loaded towing as well as the stability and compliance needed for off-road terrain, making the lifted Super Duty genuinely capable and comfortable in both environments. Customers at IMM Hawaii Parts who tow heavy regularly choose this lift kit specifically for the Falcon shock quality and the confidence it provides on a fully loaded 6-inch-lifted diesel Super Duty.
Precision-Tuned Front Coil Springs for True 6 Inch Lift
The front coil springs in this system are precision-tuned specifically for the Power Stroke diesel 4WD Super Duty platform, accounting for the significant front-end weight of a diesel engine when determining the correct spring rate for achieving and maintaining the true 6-inch lift height. Springs tuned for the correct platform weight are essential on a heavy-duty diesel truck, where an incorrectly rated spring would result in the front sitting below the intended lift height under the weight of the engine, especially when loaded with a heavy front bumper, winch, or other front accessories. The precision-tuned coil springs in this ReadyLift kit deliver the correct 6-inch lift height consistently regardless of typical front accessories.
Radius Arm Drop Brackets for Correct Caster and Alignment
The radius arm drop brackets included in this system are one of the most important geometry correction components for a 6-inch lift on the Super Duty Radius Arm front suspension. When significant lift is added to a Radius Arm suspension without addressing the radius arm angle, the caster is thrown off, and the truck develops wandering and imprecise steering that makes highway driving and towing feel unsettled. The radius arm drop brackets in this kit correct the caster angle after the 6-inch lift is installed, maintaining proper front-end alignment geometry and the straight-line tracking stability that Super Duty owners depend on during loaded highway towing and daily driving.
Fits Up to 37 Inch Tires on 9 Inch Wide Wheels
This 6-inch lift system is verified to clear tires up to 37 inches in diameter on 9-inch wide wheels with a plus 18mm offset on the 2023 through 2026 Super Duty F250 and F350. Running 37-inch tires on a 6-inch lifted Super Duty gives the truck a commanding presence on the road and significantly improved ground clearance for demanding off-road terrain. Contact IMM Hawaii Parts for personalized wheel and tire recommendations for your specific Super Duty build and intended use.
Important Notes Before Purchasing
Super Duty trucks equipped with the Onboard Scale feature require the Auto-Leveling Headlight Bracket kit, part number 67-23410, designed for 3.5- to 6-inch lifts as a separate purchase. Tremor models will not achieve the full 6-inch increase over stock due to the Tremor's elevated factory ride height. Single Cab fitment and drivability have not been validated by ReadyLift. Trucks equipped with Smart Hitch or Auto Headlight Adjuster features are not fully supported by the current kit, as mounting hardware for these features is not included. This kit is for diesel 4WD single rear wheel models only and is not compatible with 2WD or gas-powered Super Duty configurations.
Product Details
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Specification
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Details
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Compatible Vehicle
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2023 to 2026 Ford Super Duty F250 and F350 4WD Diesel SRW
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Part Number
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ReadyLift 49-23620
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Brand
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ReadyLift
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Lift Height
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6 inches Front
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Springs
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Precision-Tuned Front Coil Springs
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Shocks
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Falcon 1.1 Monotube, All Four Corners
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Radius Arm Drops
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Included for Caster Correction
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Max Tire Size
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37 inches on 9-inch-wide Plus 18 Offset
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Install Type
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Bolt On, No Structural Modifications
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Not Compatible
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2WD, Gas, Dual Rear Wheel, Tremor Full 6 Inch Not Achieved
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Who Is This Lift Kit Designed For?
The ReadyLift 6 Inch Coil Spring Lift Kit Ford Super Duty is the right choice for 2023 through 2026 F250 and F-350 Power Stroke diesel 4WD single rear wheel owners who want a complete 6-inch lift system with precision coil springs, Falcon 1.1 monotube shocks, and radius arm drop brackets for proper caster correction and 37-inch tire clearance. Shop this kit and complete Super Duty wheel and tire packages at IMM Hawaii Parts, where our team can help you confirm fitment and build the perfect 6-inch lifted Super Duty setup for towing, hauling, and off-road use.
Ready to upgrade your vehicle? Get in touch with IMM Hawaii Parts today for expert guidance and premium aftermarket parts you can trust.
