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Transform Your F-150 with Rugged Style and Trail-Ready Performance: Give your Ford F-150 a bold new stance and unstoppable capability with Rough Country's 4-Inch Suspension Lift Kit. Designed for aggressive off-road performance and a head-turning look, this all-inclusive kit equips your truck for the path less traveled. Run Up to 33-Inch Tires with Confidence: Gain the clearance you need to conquer rough terrain. This kit includes durable lifted knuckles and strut spacers, providing room for larger tires while maintaining optimal geometry. Engineered for a Factory-Like Ride: Precision-designed differential drop brackets, sway-bar brackets, brake line extensions, and a driveshaft spacer work together to maintain proper angles, ensuring a smooth, controlled ride, even with added lift. Heavy-Duty Crossmembers Built to Last: Front and rear crossmembers are reinforced for maximum strength and feature a modern design tailored to fit newer F-150 models seamlessly. Level Stance, OEM Compatibility: The system levels the front with the rear for a clean, aggressive profile, and retains the factory track width. Works with 18-inch or larger factory wheels* for hassle-free fitment. Stronger, Longer-Lasting Rear Blocks: Fabricated rear blocks are engineered to outperform and outlast cast alternatives, delivering enhanced durability in demanding conditions. Ride Quality You Control: Fully Configurable with Shock/Strut Options: Choose from nitrogen-charged N3 shocks for balanced performance, or upgrade to M1 Monotube shocks for enhanced ride precision and heat dissipation. Built-In Anti-Axle Wrap Design: Specially designed rear blocks combat axle wrap and eliminate common lift block issues, all while preserving the factory ride feel. Peace of Mind Included: Rough Country backs this kit with a Limited Lifetime Replacement Guarantee, ensuring your suspension is ready for whatever comes next.
Boosted Ground Clearance: Sail over rocks, ruts, and road debris with extra ride height for unstoppable off-road confidence.
Factory Track Width Retained: Keep the OEM stance you love while enjoying a taller, more capable setup.
OEM Wheel Compatibility: Fits 18-inch or larger factory wheels so you can upgrade without buying new rims.
Perfect Front-to-Rear Leveling: Eliminates that nose-down look, creating a balanced, aggressive profile.
Heavy-Duty Fabricated Blocks: Welded steel blocks outlast cast alternatives, delivering unmatched strength and longevity.
Anti-Axle-Wrap Rear Blocks: Special design preserves stock ride quality while stopping the wheel hop common with ordinary lift blocks.
Fully Configurable with Shock/Strut Options: Choose from our nitrogen-charged N3's to the M1 Monotube's for the perfect ride quality.
Requires cutting and drilling. Does NOT fit regular or standard cab models due to pinion angle issues, which cause drivetrain vibrations. Models retaining factory wheels are advised to run no wider than a 11.5" wide tire.
Fitment Year: 2015 2016 2017 2018 2019 2020
Make: Ford
Model: F-150
Submodel: King Ranch
Drive: 4WD
Manufacturer SKU: 55540
Most products ship directly from our vendor warehouses or distributor network. Shipping times can vary depending on the brand, product size, availability, and destination.
Large or oversized items such as lift kits, wheels, tires, bumpers, exhaust systems, and audio enclosures may require additional handling time or freight shipping.
If there is ever an issue with availability, shipping cost, or delivery timing, we will contact you before moving forward with the order.
Returns may be accepted on most new, unused, unopened items within 30 days of delivery. Items must be in original packaging and in resellable condition.
Installed, used, damaged, missing-parts, electrical, special-order, clearance, or custom-built items may not be eligible for return.
Return shipping is normally the customer’s responsibility unless the return is due to our mistake, such as the wrong item being shipped.
Before sending anything back, please contact Kaos Offroad so we can review the order and provide return instructions. Returns sent without approval may be refused.
Some products are vehicle-specific. Please verify fitment before ordering. If you are unsure, contact us with your year, make, model, sub-model, and any relevant details before purchasing.
Original shipping charges, freight charges, and vendor restocking fees may be non-refundable depending on the item and supplier policy.






