ReadyLIFT Tubular Radius Arm Kit, full kit on a studio background: pair of black ReadyLIFT tubular radius arms with cam bolts on white

ReadyLIFT Tubular Radius Arm Kit on a vehicle: black tubular radius arm installed under a Super Duty front axle beside a large tire

ReadyLIFT Radius Arms

Name: ReadyLIFT Radius Arms
Brand: ReadyLIFT
SKU: RDY-PARENT-RADIUS-ARMS
Price: 789.95 USD
Availability: InStock

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ReadyLIFT tubular radius arm kits correct front suspension geometry on leveled and lifted 2017-2026 Ford F-250 and F-350 Super Duty trucks. Each kit replaces the factory radius arms to restore caster and is built for the heavy use Super Duty trucks see.

Alignment, headlamp aiming and ADAS recalibration are not included.

Features

Corrects lifted geometry
Lifting a solid front axle changes the radius arm angle. These parts return the geometry toward the factory design.

Made for Super Duty
Every part in this range is engineered for Ford Super Duty 4WD trucks.

Built heavy for duty
Arms and brackets are built for the use and weight heavy-duty trucks put on their front suspension.

Supports larger tires
Correct arm geometry keeps axle location in check as bigger tires go on a lifted truck.

Upgrade for lifted trucks
The parts are aimed at trucks already running a leveling or lift kit.

Fitment & Compatibility

Ford
Years	Model	Notes
2017-2022	F-250 Super Duty	4WD only; Diesel engine only
2023-2026	F-250 Super Duty	4WD only; Diesel engine only
2017-2019	F-350 Super Duty	4WD only; Diesel engine only
2020	F-350 Super Duty	Not for Tremor trim; 4WD only; Diesel engine only
2021-2022	F-350 Super Duty	4WD only; Diesel engine only
2023-2026	F-350 Super Duty	4WD only; Diesel engine only

Fit guidance: ReadyLIFT builds each radius arm for specific vehicles. Choose your vehicle to see its part number and fit notes.

Specifications

Brand: ReadyLIFT
Warranty: ReadyLIFT No Hassle warranty, original purchaser; bushings up to 1 year
Kit type: Control arms

Installation

Type: radius arm upgrade · Install: per-vehicle, see each kit's install sheet · Afterward: alignment, headlamp aim, ADAS check

These parts install at the front radius arm mounts on each side. Plan on a wheel alignment after installation and have headlamp aim checked. Vehicles with camera, radar or sonar driver-assistance systems need those systems checked and recalibrated, which can require dealer tools. ReadyLIFT recommends installation by a certified mechanic and says to read the full instructions before starting.

Warranty, Shipping & Returns

Warranty. ReadyLIFT backs this product with its No Hassle warranty for the original purchaser: if a part breaks or arrives defective, ReadyLIFT ships a replacement, and a claim starts with a call to 800-549-4620. Wear items such as shocks, ball joints and bushings are covered for up to one year. Discontinued, clearance and outlet items are excluded, as are labor, installation charges and consequential vehicle damage. Shipping. The carrier and ship method are set by the size and weight of the cartons when the order is placed; larger kits ship by freight. Inspect on delivery. Check every box and part against the kit component list when it arrives, and report any shortage or shipping damage before installation begins.

Returns. Unused items in their original packaging can be returned within 30 days of delivery. If an item arrives damaged, defective or wrong, return shipping is on us. See our Returns & Refunds Policy, or email support@prestigetruck.com with any question.

About ReadyLIFT

ReadyLIFT Suspension started in 2006 with one goal: give truck and SUV owners more tire clearance and a better stance while keeping the ride and handling their vehicle had from the factory.

What began as a practical option to traditional big lifts now spans front leveling kits, SST mild lifts, full big lift systems, premium coilover packages, upper control arms and Falcon shocks for popular trucks and SUVs.

Wheel Pros bought ReadyLIFT in 2018, and in August 2026 the brand joined Bestop Premium Accessories Group, which plans continued investment in engineering, product development, manufacturing and customer support.

Super duty geometry, corrected

Radius arm upgrades bring caster and axle location back in line on a lifted Super Duty, so steering and tire wear behave as they should.

Radius Arms by ReadyLIFT: Pair of black ReadyLIFT tubular radius arms with cam bolts on white.

Room for bigger tires

Tubular arms are formed inward for added tire clearance, and correct geometry keeps a larger tire tracking straight.

Built for heavy duty

Super Duty trucks tow and haul hard. These parts are built for that work on a lifted front end.

Frequently Asked Questions

Straight answers on specs, fit and support

Why correct radius arm geometry on a lifted truck?

Lifting a solid front axle tilts the radius arms, which changes caster and axle position. Correcting it helps steering and tire wear.

What lift heights are these for?

Each part lists its lift range in the title and specifications. They are meant for leveled or lifted trucks, not stock height.

Will I need an alignment after installing it?

Yes, plan on one. ReadyLIFT notes the vehicle may need an alignment after installation, and headlamp aim should be checked at the same visit.

Does it affect driver-assistance cameras and radar?

Changing ride height can shift camera, radar and sonar aim. ReadyLIFT says to check and recalibrate these systems after installation, and some vehicles need dealer tools to do it.

Can I install it myself?

ReadyLIFT recommends a certified mechanic and says to read the instructions fully before starting. The install sheet and ReadyLIFT's estimated install time for this exact kit are on this page.

Are the bushings covered by the warranty?

ReadyLIFT covers wear items such as bushings for up to one year for the original purchaser.