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ICON Vehicle DynamicsPart # K93144D

ICON 2021-2026 Ford F-150 4WD, 3.5-4.5" Lift, Stage 4 Suspension System, Billet, CDXS

Regular price $5,984.80
Regular price B2B price $5,984.80
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  • Front lift 3.5-4.5"
  • Shocks included
Read the important notes before ordering

Questions about fitment? Live chat or call 866-235-4715

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Optional add-ons

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  • Free shippingMost orders $500+
  • 30-day returnsSee policy
  • Warranty supportWe work with the maker
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Questions about fitment?

Talk to a TRU specialist

We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT

Important notes before you order

  1. APPLICATION NOTE #1: Only fits 4WD models
  2. APPLICATION NOTE #13: Included rear shocks are compatible with 0-2" of rear lift over stock on most models
  3. APPLICATION NOTE #55: Shocks Are Fully Serviceable. Coilover Heights Indicated Are For A Stock Equipped Vehicle
  4. APPLICATION NOTE #129: Will Not Work With Factory Installed Electronically Controlled Suspension
  5. APPLICATION NOTE #130: Equipped With Dynamic Bending Headlamps Purchase Part# 611071
  6. APPLICATION NOTE #152: ICON Delta Joint Pro Upper Control Arms Required
  7. APPLICATION NOTE #155: Requires recalibration of Advanced Driver Assistance Systems (ADAS) after install
  8. APPLICATION NOTE #236: Will not fit F-150 Raptor
  9. APPLICATION NOTE #238: Not compatible with models equipped with OnBoard Scales
  10. APPLICATION NOTE #667: Models equipped with PowerBoost hybrid engines will have front lift height range of 3.25-4.25" over stock
  11. APPLICATION NOTE #668: Models equipped with Power-Stroke diesel engines will have front lift height range of 3-4" over stock

TRU specialist notes

From the Trucks R Us fitment and install team, beyond the manufacturer's information.

  • Plan for a professional wheel alignment after installing any lift or leveling kit.
  • Going to bigger tires as well? Speedometer recalibration may be needed, and some tire and wheel combinations need trimming. Check the recommended wheels and tires, or ask us before you order.

Specifications

BrandICON Vehicle Dynamics
Part numberK93144D
UPC / GTIN840103432083
Front Lift Height3.5-4.5"
Active or Passive SuspensionPassive
Adjustable CompressionYes
Adjustable Control ArmYes
Adjustable DampingYes
Adjustable ReboundNo
Bushing(s) IncludedYes
Coil Quantity Front2
Coil Spring ColorBlack
Coil Spring End 1 TypeClosed
Coil Spring End 2 TypeClosed
Coil Spring MaterialSteel
Coil Spring Maximum Inside Diameter3 IN
Coils Quantity Front2
Damping Adjustment TypeDual Speed Manual
Front Reservoir StyleRemote
Front Shock Body Diameter2.5 IN
Front Spring Rate550 PPI
Front Spring Rate TypeLinear
Grade TypePerformance
Maximum Lift3 IN
Maximum Lift Front4.5 IN
Maximum Lift Height Front4.5 IN
Minimum Lift Front3.5 IN
Mounting Hardware IncludedYes
Rear Reservoir StylePiggyback
Rear Shock Body Diameter2.5 IN
Shocks IncludedYes
Spring ColorBlack
Spring MaterialSteel
Country of OriginUS

California Proposition 65 warning applies to this product. www.P65Warnings.ca.gov

What's in the box

QtyPartDescription
191824X21-25 F150 TREMOR 2.5-3" 2.5 VS RR CDXS COILOVER KIT
198523DJ21-25 F150 BILLET UCA DJ PRO KIT
19400021-25 F150 4WD FRONT KNUCKLE KIT
197721XP21-25 F150 4WD TREMOR REAR 2.5 VS PB CDXS PAIR

Features

  • High strength ductile iron steering knuckles replicate F-150 Tremor suspension geometry
  • Adjustable coilovers offer 3.5-4.5" of front lift height over stock
  • 2.5 Series front coilovers with remote reservoirs for improved shock cooling
  • Billet Upper Control Arms with Delta Joint Pro ball joints for added strength, durability, and alignment spec range with on-vehicle adjustability
  • 20% increase in front wheel travel and improved ride quality over stock with no change in towing capacity
  • Vehicle specific tuned front and rear shocks for superior damping and vehicle control
  • All shock absorbers equipped with ICON CDXS for independent adjustability of high speed and low speed compression force for handling response and aggressiveness
  • Corrosion resistant CAD plated coilover shock bodies with 7/8" shafts
  • FK rod end bearings for extended longevity and minimal deflection
  • High strength alloy CNC machined lower bar pin
  • 2.5 Aluminum Series piggyback reservoir rear shocks with 7/8" hardened chromed steel shafts
  • 6061 Aircraft grade aluminum CNC machined components
  • 100% Bolt-on system - no cutting or welding necessary for install

Recommended wheels & tires

  • OEM Wheels & Tires Fitment: Not compatible with all available OE wheel/tire combinations. Aftermarket wheels with lower offset/less backspace recommended.
  • Recommended Aftermarket Wheels: ICON Alloys - 17x8.5" w/ 5” Backspace / 6mm Offset
  • Recommended Aftermarket Wheels: ICON Alloys - 18x9" w/ 5.25" Backspace / 6mm Offset
  • Recommended Aftermarket Wheels: ICON Alloys - 20x9" w/ 5.625" Backspace / 16mm Offset
  • Recommended Aftermarket Tires: 34" x 12.50" (Larger tires may fit but fender trimming and modifications will be required.)

Installation

    Free install support from the Trucks R Us tech team, for you or your shop.

    Overview

    ICON Vehicle Dynamics 2021-2026 Ford F-150 4WD suspension systems are designed with maximum performance and the serious driver in mind. ICON engineers’ primary focus is to increase wheel travel and damping ability, which translates into outstanding vehicle control and ride quality both on and off-road. To achieve this, these systems include high-strength CNC machined ductile iron steering knuckles that replicate the suspension geometry of the F-150 Tremor and are effectively a Tremor “conversion” for your F-150 4WD. This Stage 4 system includes vehicle-specific tuned 2.5” coilover shocks featuring CDXS equipped remote reservoirs for exceptional cooling properties and ICON-engineered coil springs for superior vehicle “feel” through the range of travel. These coilovers are also height adjustable for 3.5-4.5” of front lift over stock, allowing the use of larger, more aggressive wheel and tire combinations. Their combination with the ICON steering knuckles also allows for a 20% increase in wheel travel compared to other ICON F-150 coilover kits.

    Billet aluminum Delta Joint PRO upper control arms on the F-150 not only add strength and durability, but help retain factory alignment spec range, offer on-vehicle caster/camber adjustment, and allow for the extra lift height this system provides. ICON 2.5 Aluminum Series CDXS piggyback reservoir rear shocks utilize a vehicle-specific valving and offer increased damping and head dissipation, balancing the performance of the truck from front to rear. ICON's exclusive Compression Damping Dual Speed (CDXS) valves are included for precisely dialing in your suspension performance. CDXS controls fluid flow under compression, with independent adjustability of high speed and low speed compression force. 10 discreet detented settings for both low and high-speed adjustment knobs allow separate adjustments for handling response and overall aggressiveness. The ICON Vehicle Dynamics 2021-2026 F-150 4WD Stage 4 suspension system is an excellent choice for those drivers looking to enhance the capabilities of their pickup on the road as well as in the dirt.

    This system features upper control arms with ICON's patented Delta Joint PRO. Delta Joint PRO is ICON's innovative new suspension articulation joint which combines the durability and longevity of factory style ball joints with performance and strength that exceeds traditional motorsports-style ball joints. The Delta Joint PRO features a new rebuildable, serviceable design in which any component may be removed, inspected, and replaced without having to purchase a whole new joint. Strength and durability are improved by using a larger ball with 56% more bearing surface than our standard Delta Joint, along with improved lubrication sealing. But improved performance is at the heart of the Delta Joint PRO, with a full 90 degrees of articulation, from one extreme to the other. This represents a 14% improvement in range of motion, over the highly capable original Delta Joint, allowing for maximum bind-free suspension movement through the complete range of travel. The Delta Joint PRO is built to take the abuse, with a chromoly ball and shaft that has a bearing surface hardened to Rockwell C 55. The replaceable races are made of graphite-impregnated sintered metal, machined to the finest tolerance to provide a flawless, metal-to-metal bearing interface. We also redesigned the lubrication system, with lubricant channels that distribute grease more efficiently without extending past the bearing seal.

    Questions

    Will this fit my truck?

    Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.

    Do you help with installation?

    Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.

    What if the part has a problem?

    We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.

    Can I return it?

    Most items can be returned within 30 days. See our return policy for details.

    Do I need an alignment after installing?

    Yes. Any lift or leveling kit changes suspension geometry, so get a professional alignment after installation.

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