Home/All Parts/ReadyLift/ReadyLift Suspension Leveling Kit — 1.75" Lift — Trail Boss — 2019-2026 Chevrolet Silverado 1500, select trims; 2019-2026 GMC Sierra 1500, select trims (66-3921)

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ReadyLift Suspension Leveling Kit — 1.75" Lift — Trail Boss — 2019-2026 Chevrolet Silverado 1500, select trims; 2019-2026 GMC Sierra 1500, select trims (66-3921)

Fitment data included Warranty backed Tracked delivery

Product Details

ReadyLift leveling kit.

ReadyLIFT customers have asked for it and we have delivered. The AT4/Trail Boss are factory equipped with a 2" front lift. This front lift includes a longer front shock/strut assembly. The ReadyLIFT 66-3921 1.75" leveling kit is similar to our popular 66-3086 leveling kit for pre-2019 trucks. The 66-3921 leveling kit provides required amount of lift without causing conflict with the factory strut geometry and clearances. Note: AT4 and Trail Boss do not fit the same size tire. This is due to the difference in front fender opening design.

A leveling kit raises the front to match the factory rear height, without changing the rear suspension.

Use the vehicle selector to confirm your exact year and configuration.

Confirm this fits your vehicle. Use the “Check Fit” selector, or see the Vehicle Compatibility list below for confirmed years, makes and models.

ReadyLift

ReadyLift Suspension Leveling Kit — 1.75" Lift — Trail Boss — 2019-2026 Chevrolet Silverado 1500, select trims; 2019-2026 GMC Sierra 1500, select trims (66-3921)

Name: ReadyLift Suspension Leveling Kit — 1.75" Lift — Trail Boss — 2019-2026 Chevrolet Silverado 1500, select trims; 2019-2026 GMC Sierra 1500, select trims (66-3921)
Brand: ReadyLift
SKU: RDY66-3921
Price: 739.99 CAD
Availability: InStock

Professional installation recommended. This part affects how your vehicle handles, steers or carries load. Have it installed by a qualified technician, torqued to the manufacturer's specification, and have the alignment checked afterwards where the manufacturer calls for it.

Part #: RDY66-3921 In stock

$739.99

Price in CAD. Taxes & shipping calculated at checkout.

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Arrives within 1 week.Estimate, not a guarantee — if an order will take longer we contact you before taking payment.

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Fits these vehicles

2019–2026 Chevrolet Silverado 15002019–2026 GMC Sierra 1500

Fitment data is provided as a guide — please verify before purchase.

Vehicle fitment

Estimated fitment — verify before purchase

Years	Make	Model	Trim
2019–2026	Chevrolet	Silverado 1500	LT Trail Boss
2019–2026	GMC	Sierra 1500	AT4

Check fitment before you order. We publish fitment from manufacturer and industry data and take care with it, but fit can depend on trim, cab and bed configuration, factory options and any modifications already on your vehicle. If you are unsure, contact us before ordering — and if fitment we published turns out to be wrong, we cover the return.