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ICON Vehicle DynamicsPart # K65917R

ICON 2023-2026 Ford F-250/F-350 Super Duty 4WD, Gas, 4.5" Lift, Stage 8 Suspension System w/ Radius Arms

Regular price $9,839.20
Regular price B2B price $9,839.20
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  • Front lift 4.5"
  • Shocks included
Read the important notes before ordering

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

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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 #3: Not compatible with F-350 Cab & Chassis models
  3. APPLICATION NOTE #55: Shocks are fully serviceable. Lift heights indicated are for a stock equipped vehicle.
  4. APPLICATION NOTE #151: Fits single rear wheel models only
  5. APPLICATION NOTE #155: Requires recalibration of Advanced Driver Assistance Systems (ADAS) after install
  6. APPLICATION NOTE #156: Springs are rated for gasoline engines
  7. APPLICATION NOTE #157: Lift heights based on 4WD crew cab gas
  8. APPLICATION NOTE #163: If equipped with OnBoard Scales also requires sensor bracket part number 66204
  9. APPLICATION NOTE #198: An iOS operated device is required to run ICON Intelligent Control App
  10. APPLICATION NOTE #521: Trucks equipped with Tremor package with have front lift height of 3.5" 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 numberK65917R
UPC / GTIN840103434612
Front Lift Height4.5"
Active or Passive SuspensionActive
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
Coils Quantity Front2
Damping Adjustment TypeElectronic
Front Reservoir StyleRemote
Front Shock Body Diameter2.5 IN
Front Spring Rate430 PPI, 600 PPI
Front Spring Rate TypeProgressive Dual Rate
Grade TypePerformance
Leaf Spring Bracket ColorBlack
Leaf Spring Bracket MaterialSteel
Maximum Lift4.5 IN
Maximum Lift Front4.5 IN
Maximum Lift Height Front4.5 IN
Maximum Lift Height Rear2 IN
Maximum Lift Rear2 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
Installation InstructionsI37705EP/REVA.pdf

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

What's in the box

QtyPartDescription
16405123-25 FSD FRONT 4.5" BOX KIT
16401323-25 FORD F-250/F-350 FRONT 4.5" GAS DUAL RATE SPRING KIT
16403908-25 FSD TRACK BAR BUMP STEER BRACKET KIT
16404323-25 FSD 2-5.5" LIFT RADIUS ARM SYSTEM
16403817-25 FSD ADJ TRACKBAR KIT
16505323-25 FSD 2.5 PB CENTERLINE STABILIZER KIT
119527599-25 FSD 5" BLOCK KIT
16700311-25 FSD REAR 15" U-BOLT KIT
19350223-25 FSD IIC INSTALL KIT
167811EP23-25 FSD 4.5" FRONT 2.5 VS RR CDEV PAIR
137705EP17-25 FSD 0-3" REAR 2.5 VS PB CDEV PAIR

Features

  • Fits 2023-2026 F-250 / F-350 4WD gasoline applications
  • ICON engineered dual rate coil springs deliver 4.5" of front lift with exceptional vehicle control over varying terrain
  • ICON 2.5 Aluminum Series remote reservoir shocks feature vehicle specific tune for superior performance and ride quality
  • Remote reservoirs maintain cooler operating temperatures and consistent performance during extended off-road use
  • ICON's CDE Valve technology allows for in vehicle adjustment of compression damping settings and active adjustment via the ICON Intelligent Control (IIC)
  • ICON Intelligent Control (IIC) uses onboard sensors to monitor G-forces and movement of vehicle chassis along with user defined settings to actively make near instantaneous compression damping changes
  • Approximately 50% increased front wheel travel over stock
  • Fabricated radius arms provide increased strength, on vehicle caster adjustment, improved tire clearance at steering lock, and higher ground clearance
  • Track bar drop bracket reduces track bar angle and corrects bump steer geometry
  • Adjustable track bar allows fine tuning of track alignment and improves handling characteristics
  • ICON 2.5 Centerline steering stabilizer kit with piggyback reservoir offers increased steering damping
  • Stainless steel braided front brake lines
  • Heavy-duty fabricated rear lift blocks
  • 2.5 Aluminum Series shocks feature corrosion resistant hard anodized shock bodies with 7/8" shafts
  • Shocks are fully rebuildable and re-tunable
  • Lifetime guarantee against coil spring breakage or sagging
  • Lifetime guarantee against ICON fabricated component breakage or manufacturer defect

Recommended wheels & tires

  • OEM Wheels & Tires Fitment: Yes
  • Recommended Aftermarket Tires: 37" x 12.50" (Larger tires may fit but fender trimming and modifications will be required.)
  • 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/ 5.25” Backspace / 6mm Offset

Installation

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

    Overview

    This ICON Vehicle Dynamics 4.5” suspension system is a great way to lift your 4WD 2023-2026 Ford F-250/F-350 Super Duty while drastically improving ride quality and performance and allowing fitment of larger, more aggressive wheel and tire combinations. This Stage 8 system is perfect for on-road and towing use, job site duty, washboard gravel roads, as well as more aggressive off-road adventures.

    ICON's 4.5" Stage 8 System is comprised of 4.5” lift coil springs optimized for trucks equipped with gasoline engines with a dual rate design that allows for a softer initial rate for superb on-road comfort and a firmer secondary rate that increases during compression for excellent bottoming resistance and off-road performance. Fabricated radius arms offer significantly more strength over the OE units and feature built in caster cams for on-vehicle caster adjustment, maintenance free bushings, and improved tire clearance at full steering lock, all while eliminating the need for drop brackets and thus raising ground clearance under the chassis. The fabricated track bar drop bracket allows the axle to be properly centered under the frame and reduces road feedback throughout the steering system with improved on- and off-road manners thanks to the elimination of bump steer. An adjustable track bar allows for on-vehicle adjustment to fine tune track alignment as well as eliminating the deflective OE track bar bushings for an overall more rigid unit to improve the vehicles handling characteristics.

    ICON’s Centerline steering stabilizer kit features a 2.5 Aluminum Series shock absorber with a piggyback reservoir for improved steering damping compared to ICON dual 2.0 steering stabilizers, better controlling undesirable steering feedback caused by larger tires while also improving ground clearance. Heavy-duty fabricated 5" rear blocks and U-bolt kit lift the rear of the vehicle and are designed to withstand heavy towing/hauling duty as well as the stresses of aggressive off-road use. ICON 2.5 Aluminum Series CDEV remote reservoir front and rear shocks feature a vehicle specific tune for improved vehicle handling and excellent ride quality on- and off-road, with improved performance compared to 2.0 Aluminum Series shocks, and remote reservoirs greatly increase shock oil volume and heat dissipation surface area to resist overheating and cavitation under hard use, which can lead to damper fade. Focus on driving and let ICON Intelligent Control (IIC) read the terrain and make near-instant adjustments via the Compression Damping Electronic Valve (CDEV) at each individual shock. Control the system wirelessly through the IIC app on your phone and once configured the system functions without driver input. The included box kit includes fabricated front sway bar drop brackets to prevent bind, heavy-duty aluminum bump stop spacers, and high quality stainless steel extended brake lines.

    This suspension system features high quality CNC machined, laser cut, and brake formed components and with the endless hours ICON has spent testing and tuning our suspension components and shock absorbers as a complete system, you can rest assured you have the best suspension solution on the market.

    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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