Guide
4 Best Leveling Kits for Silverado 1500 / Sierra 1500
Silverado 1500 and Sierra 1500 leveling kits organised by trim — standard, Trail Boss / AT4, ZR2 / AT4X — because on this platform the trim picks the kit.
On the Ford, a leveling kit decision starts with dampers and driver assistance. On the GM twins it starts somewhere simpler and stricter: which trim is on the badge? Chevrolet and GMC sell factory-lifted versions of these trucks — Trail Boss, AT4, ZR2, AT4X — alongside standard ones, and the kit catalogues split cleanly along that line. Buy by trim and this platform is easy. Buy by price alone and you will own a kit your truck excludes. So this guide is organised by trim first and brand second, and every kit in it was verified on its manufacturer’s product page on the date shown. Coverage is the current T1XX generation (2019+); the honesty note about the older K2XX trucks is at the bottom, and it matters.
How we chose these kits
Verified-spec comparison, as everywhere on this site: manufacturer product page, recorded lift, stated max tire and the exclusions in the manufacturer’s own words — our method is in how we test and verify, and we have not hands-on tested any of these kits. Four kits verified for this page, covering all four trim families. Between them they also cover the platform’s whole price spread, from a spacer configuration to kits with replacement upper control arms.
Quick Comparison Table
| Image | Product | Key Feature | Buy Now |
|---|---|---|---|
 | Rough Country 2in Leveling Kit — Upper Strut Spacer (configurable)★ Best Budget | Configurable upper strut spacers for standard trucks — with the clearest exclusion list on the platform. | Check Price |
 | ReadyLIFT 1.5in Leveling Kit (upper strut spacer)★ Best Overall | The conservative 1.5-inch level with a manufacturer-stated 33-inch fitment and its caveats printed. | Check Price |
| ReadyLIFT 1.75in Leveling Kit with Tubular Upper Control Arms — Trail Boss / AT4★ Best for Trail Boss / AT4 | Built for the factory 2-inch lift: 1.75 inches more with tubular UCAs, and a stated 35.1-inch tire on the Trail Boss. | Check Price | |
 | ReadyLIFT 1.5in Leveling Kit with Tubular Upper Control Arms — ZR2 / AT4X★ Best for ZR2 / AT4X | The route for the DSSV-damped flagships: 1.5 inches with tubular UCAs and an interlocking pre-load spacer. | Check Price |
Detailed Product Reviews
Rough Country
Rough Country 2-Inch Leveling Kit (1323)
Check Price on AmazonSource listing used for verificationLast checked November 3, 2026
Key specs
- Front lift: 2″
- Rear lift: 0″
- Type: leveling
- Max tire stated: 33″
- SKU: 1323
Why we recommend it
Rough Country's configurable 2-inch upper-strut spacer kit is the entry point for the T1XX platform: sold in spacer form or with optional N3 struts, for 2019–2026 Silverado and Sierra in 2WD and 4WD, with a wheel and tire table that tops out at 33-inch-class sizes (285/65R18; 285/55R20 on a 20×9 at +0 offset with no trimming note). Its real value in this guide is its exclusion list, which is the clearest one-page summary of this platform's traps that any manufacturer publishes: no Denali or Denali Ultimate with Adaptive Ride Control, no AT4 / AT4X / Trail Boss / ZR2, no Super Cruise, no LD models, and the optional N3 struts do not fit diesels.
From the Amazon listing
- Give your GM 1500 the Perfect Blend of Performance, Protection, and Style from Rough Country.
- Increase Ground Clearance for On and Off-Road Obstacles | Levels the Front with the Rear.
- Maintains Smooth, OEM Like Ride. | Unmatched CV Angles for Optimum Driving Performance.
Best for: Mainstream LT, RST or SLE trucks without adaptive dampers
Pros
- ✓ The budget legitimate level for a standard T1XX truck
- ✓ The platform's clearest exclusion list — you know before you order
- ✓ 2WD and 4WD, 2019–2026
Cons
- ✗ Excludes every factory-lifted trim and all ARC trucks
- ✗ No Super Cruise trucks
- ✗ Optional N3 struts do not fit diesels
Check Price on AmazonSource listing used for verificationLast checked November 3, 2026
Key specs
- Front lift: 1.5″
- Rear lift: 0″
- Type: leveling
- Max tire stated: 33″
- SKU: 66-39150
Why we recommend it
ReadyLIFT's 1.5-inch upper strut spacer is the kit our Silverado hub already carries as its verified row, and it earns its place here on the strength of its paperwork: a stated fitment of up to a 33×11.50R20 on a 20×9 wheel with 0 offset, with the honest asterisks attached — minor trimming to the felt liner may be required, and some wheels need a 6mm or greater spacer to clear the brake caliper. One and a half inches is also the gentlest geometry change in this guide, which is a real consideration on a truck you tow with.
From the Amazon listing
- 2019-2023 GM 1500 2WD/4WD
- New body style only
- 1.5" Upper Strut Spacer Leveling Kit
Best for: Standard trucks that tow — the gentle, conservative level
Pros
- ✓ Stated 33×11.50R20 fitment, asterisks included
- ✓ Gentlest geometry change in this guide — kind to a tow truck
- ✓ The Silverado hub's verified reference kit
Cons
- ✗ ARC trucks need the different 66-39151 SKU, not this one
- ✗ Excludes Trail Boss, AT4 and ZR2 outright
- ✗ Not for the 2019 Limited — that truck is a K2XX
Last checked November 3, 2026
Key specs
- Front lift: 1.8″
- Rear lift: 0″
- Type: leveling
- Max tire stated: 35.1″
- SKU: 66-3921
Why we recommend it
This is the kit that makes the platform interesting. The Trail Boss and AT4 leave the factory with a 2-inch lift and a longer strut assembly, which is why every standard kit excludes them — and why ReadyLIFT built the 66-3921 specifically for them: 1.75 inches of additional front lift delivered with tubular upper control arms whose corrected ball-joint angles address the binding ReadyLIFT describes when a factory-lifted truck is lifted further. And because the starting point is already 2 inches up, the stated tire numbers are in a different league: max tire 295/65R20 on a 20×9 with 0 offset for the Trail Boss — a 35.1-inch tire, on a leveling kit, stated by the manufacturer. The AT4's max on the same kit is smaller (275/60-20), because its fender opening differs; ReadyLIFT says so explicitly, and we carry both figures in its card rather than averaging them into a lie.
Best for: Trail Boss and AT4 owners — the only leveling route to a stated 35-inch tire
Pros
- ✓ Purpose-built for the factory-lifted trims the standard kits exclude
- ✓ Tubular UCAs correct the ball-joint angles
- ✓ Stated 295/65R20 (35.1in) maximum on the Trail Boss
Cons
- ✗ Engineered around the factory lift — not for standard-height trucks
- ✗ The AT4's maximum is smaller (275/60-20): different fender opening
- ✗ The stock-wheel 285/75R18 option requires wheel spacers
Check Price on AmazonSource listing used for verificationLast checked November 3, 2026
Key specs
- Front lift: 1.5″
- Rear lift: 0″
- Type: leveling
- Max tire stated: 33″
- SKU: 66-32150
Why we recommend it
The flagship off-road trims sit furthest from standard — Multimatic DSSV dampers, their own factory lift — and are excluded by everything else in this guide. ReadyLIFT's answer is the 66-32150: a 1.5-inch kit with tubular upper control arms and an interlocking pre-load spacer, stating a 33×11.50 tire on a 20×9 with 0 offset, and a max of 295/60-20 with trimming. It also retains the factory turning radius, a detail that matters on trucks bought for trails.
From the Amazon listing
- Tire size: 33x11.50
- Wheel size: 20x9
- Max tire size with trimming: 295/60-20
Best for: ZR2 and AT4X owners — the trims everything else excludes
Pros
- ✓ Built for the Multimatic DSSV trucks specifically
- ✓ Retains the factory turning radius
- ✓ Stated 33×11.50 fitment, 295/60-20 with trimming
Cons
- ✗ Fits the ZR2 / AT4X only
- ✗ ReadyLIFT says Auto 4 Hi daily use is not recommended with it
- ✗ A level, not a lift — 35s are not claimed
Buying Guide: The Trim Picks the Kit
ARC-equipped Denali and High Country trucks are the fifth case: none of the four above is your kit as sold — ReadyLIFT’s ARC variant of the 1.5-inch kit is the 66-39151, and Rough Country sells a separate Adaptive Ride leveling kit. The Silverado hub explains that split in full.
The exclusions are the review
Step back and the pattern is the platform: on the T1XX trucks, fitment is trim-shaped. Factory lift (Trail Boss / AT4 / ZR2 / AT4X) decides which catalogue you shop in; adaptive dampers (ARC, and MagneRide in Superlift’s listings) decide which SKU inside it; the 2019 model year decides which body you actually own. Every kit above states its answers to those three questions on its manufacturer page, which is exactly why these four made the guide and looser listings did not.
🏆 Our Top Recommendation
ReadyLIFT 1.5-Inch Leveling Kit (66-39150)
If you want one recommendation for a standard Silverado or Sierra, it is this one: 1.5 inches is the gentlest geometry change in the guide, its paperwork is the most honest on the platform — a stated 33×11.50R20 fitment with the trimming and wheel-spacer asterisks printed rather than buried — and it is the kit our dataset already carries as the verified reference row for these trucks.
ReadyLIFT's 1.5-inch upper strut spacer is the kit our Silverado hub already carries as its verified row, and it earns its place here on the strength of its paperwork: a stated fitment of up to a 33×11.50R20 on a 20×9 wheel with 0 offset, with the honest asterisks attached — minor trimming to the felt liner may be required, and some wheels need a 6mm or greater spacer to clear the brake caliper. One and a half inches is also the gentlest geometry change in this guide, which is a real consideration on a truck you tow with.
Best for: Standard trucks that tow — the gentle, conservative level
Final Thoughts
Two honest limits to close. First, the K2XX gap: the 2014–2018 trucks are the used-market volume play, and our verified dataset holds no K2XX-scoped kit yet — this guide covers 2019+ only, deliberately, and the Silverado hub says so in the same terms. Second, leveling is not the ceiling: if your goal is a 35-inch tire on a standard truck, no leveling kit here states it — the manufacturer-stated route is a 4-inch SST lift, and we worked it separately in how much lift to fit 35s on a Silverado 1500. Price either path whole — kit, labour, alignment, tires — with how much does it cost to lift a truck.
Sources for this guide (checked 2026-11-03): Rough Country’s 1323 product page; ReadyLIFT’s Chevrolet leveling kits page (66-39150 application); ReadyLIFT’s 66-3921 product page; ReadyLIFT’s 66-32150 product page.
Frequently asked questions
Why can't I use a standard leveling kit on my Trail Boss?
Because the Trail Boss already has a 2-inch factory lift with a longer front strut assembly. ReadyLIFT's documentation is blunt: its standard GM 1500 kits are not compatible with Trail Boss or AT4 suspension, and stacking a spacer on the factory lift creates the control-arm binding and CV contact problems the trim-specific kits exist to solve.
Which leveling kit fits a Silverado with Adaptive Ride Control?
ReadyLIFT splits its 1.5-inch kit by damper: the 66-39150 is the non-ARC version, and ARC-equipped Denali and High Country trucks use the 66-39151 variant with ARC brackets. Rough Country's budget 2-inch kit excludes ARC Denali models outright and sells a separate Adaptive Ride kit. The damper question comes before the brand question on this platform.
What is the biggest tire I can run on a leveled Silverado 1500?
On a standard truck, the verified claims top out at 33-inch class: ReadyLIFT states a 33x11.50R20 for its 1.5-inch kit. The exception is the Trail Boss: with its factory lift plus ReadyLIFT's 66-3921, the stated max is a 295/65R20 — a 35.1-inch tire. Our Silverado 35s guide works through that claim and the 4-inch SST route.
Do these kits fit the 2014–2018 Silverado?
No — every kit in this guide is for the 2019+ T1XX generation. Our verified dataset does not yet hold a K2XX-scoped kit we are willing to publish, and borrowing T1XX numbers for the older truck is exactly the fitment error this site exists to avoid. The Silverado hub explains the gap honestly.
Does the GMC Sierra 1500 use the same kits?
Yes — Silverado and Sierra are the same platform, and the manufacturers sell these as single GM 1500 applications. The one place the badges diverge is tire clearance: ReadyLIFT notes the AT4 and Trail Boss have different front fender openings and therefore different max tires on the same kit.
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