The ReadyLIFT SST UCA replaces the factory upper arms with a pair built for lifted geometry. It adds strength over factory arms that were never designed for lift. ReadyLIFT kit 67-39401 is engineered for the 2019-2026 Chevrolet Silverado 1500, Silverado 1500 LD and Silverado 1500 LTD and GMC Sierra 1500.
What's Included:
| Kit components (ReadyLIFT) |
|---|
| One pair of heavy duty DOM tube steel control arms with corrected ball joint angles and heavy duty ball joints |
| Includes new ReadyLIFT TCT, Terrain Control Technology maintenance-free and self lubricating pivot bushings |
Alignment, headlamp aiming and ADAS recalibration are not included.
Features
Corrected lifted geometry
The arms position the ball joint for a raised ride height, which helps restore alignment range after leveling or lifting.
Stronger than factory arms
Each design uses DOM tube steel, fabricated chromoly plate or machined billet aluminum in place of the stock arm construction.
Heavy-duty ball joints
Every pair includes heavy-duty high-angle ball joints designed for a lifted front suspension.
Non-binding pivot bushings
Non-bonded pivot bushings let the arm rotate freely without the binding a rubber-bonded bushing can show.
Sold as a pair
Driver and passenger arms ship together, ready to replace both factory uppers.
Built for independent fronts
Upper arms locate the top of the steering knuckle on independent front suspension and guide it as the suspension cycles.
Fitment & Compatibility
Fit guidance: Fits: 2019-2026 Chevrolet Silverado 1500/Silverado 1500 LD/Silverado 1500 LTD & GMC Sierra 1500, with the qualifiers shown. Check your vehicle's trim, drivetrain and factory suspension against these notes before ordering.
Specifications
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Brand: ReadyLIFT
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Quantity: Pair (driver and passenger)
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Warranty: ReadyLIFT No Hassle warranty, original purchaser; ball joints and bushings up to 1 year
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Lift height: 4"
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Install time (ReadyLIFT estimate): about 3 hours (give or take 0.5), alignment and wheel mounting extra
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Shipping weight: 7 lb
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Kit type: Control arms
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Install difficulty: Professional install recommended
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Part number: 67-39401
Installation
Type: upper control arm replacement · Install: per-vehicle, see each kit's install sheet · Afterward: alignment, headlamp aim, ADAS check
These arms install using the steps in ReadyLIFT's instructions for this vehicle. 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.
ReadyLIFT estimates about 3 hours for this kit, give or take 0.5 hours, not counting the alignment or mounting wheels and tires.
Resources
An installation guide for this part number is not available to download. Our team can answer installation questions before you order; contact us with the part number.
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 vehicle 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 vehicles 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.
