ReadyLIFT 3.0" SST Lift Kit | 3.0" Front / 2.0" Rear | Billet Aluminum Strut Spacers | Tubular UCAs | Differential Drop | Rear Shock Extensions | 2025 Toyota 4Runner (6th Gen) & 2024–2025 Land Cruiser (Factory Rear Coil) | SKU: 69-55300

Verified Fitment

Toyota — factory rear coil spring equipped:

Does NOT fit:

• 2024 and earlier Toyota 4Runner (5th Generation) — different platform and rear suspension.
• 4Runner TRD Pro or Trailhunter packages — different factory suspension; the TRD skid plate will not work with this kit.
• Any 4Runner or Land Cruiser with a factory lift or off-road suspension package — verify trim before ordering.
• Air-suspension-equipped variants — this kit is for factory rear coil spring applications only.

Factory rear coil requirement: This kit is engineered specifically for models equipped with factory rear coil springs. Confirm your trim's rear suspension type before ordering — text (469) 407-7538 with your VIN or trim and we'll verify.

Component Specifications

Differential drop — engineering distinction: Raising the front 3" steepens the CV axle angles. The precision-engineered diff drop (LH, RH, and center, with crush sleeve and polyurethane bushing) resets those angles to a healthy operating range and unlocks 3"+ of down travel. This component is not optional — omitting it runs the CVs at an angle they aren't designed for.

Tubular UCAs — engineering distinction: The 3" of front lift moves the upper ball joint outside the factory arm's designed pivot range. The included tubular upper control arms have corrected ball joint pivot angles that restore proper geometry at the new ride height — which is what keeps alignment in spec and preserves the factory ride feel.

Rear shock extensions: The extensions relocate the factory rear shock mounting to match the 2" of added rear height, preserving the OEM shocks while recovering travel rather than topping them out at the new height.

What Is and Is NOT Included

Critical Compatibility

Factory rear coil spring only. This kit is engineered for 2025 4Runner (6th Gen) and 2024–2025 Land Cruiser models with factory rear coil springs. It is not for air-suspension variants.

Not for TRD Pro or Trailhunter. These packages use different factory suspension and are excluded. In addition, the factory TRD skid plate will not clear this kit's front components.

5th Gen 4Runner does not apply. The 2024-and-earlier 4Runner is a different generation and platform — this kit is 6th-Gen-specific.

Differential drop is mandatory. Do not omit the diff drop components. They maintain correct CV axle angles at the lifted height; running the front lift without them stresses the CV joints.

TSS/ADAS recalibration required. The lift changes camera, radar, and headlamp angles. Toyota Safety Sense, Pre-Collision, Lane Departure Alert, and auto high beams must be recalibrated after install.

Wheel & Tire Fitment

Fitment figures are based on Wheel Pros wheels and Nitto tires; overall diameter, tread width, aspect ratio, and sidewall construction vary meaningfully by manufacturer, so every tire-and-wheel combination must be test fit before final installation.

Additional confirmed sizes: up to 295/55R20 on an 8.5" +35 wheel (no trim); 315/70R17 with minor trimming; and 35x12.50R17 with minor trimming.

Ride quality note: Stepping up to heavier all-terrain or mud-terrain tires changes the ride. Most larger aftermarket AT/MT tires are 10-ply (Load Range E) versus a typical OEM 6-ply (Load Range C). The stiffer sidewall increases the perception of suspension stiffness often described as ride harshness, and ride, handling, traction, noise, fuel economy, and wear differ meaningfully between All-Season, All-Terrain, Mud-Terrain, and Trail-Terrain tires. Tire and wheel choice will have a real impact on how the lifted vehicle drives — factor it in.

Installation Notes

Skill level: Advanced — a complete multi-component bolt-on system (strut spacers, UCAs, diff drop, rear spring spacers, shock extensions). No cutting or welding, but the scope makes professional installation the recommended route.

Tools required: Standard hand and socket tools, torque wrench, spring compressor as needed for strut assembly, ball joint separator. Alignment shop access required after installation.

Differential drop must be installed. Do not omit the diff drop components — they maintain correct CV axle angles at the lifted height.

Post-installation alignment is mandatory. A professional 4-wheel alignment is required to verify torque specs, confirm ride height, and lock in the corrected geometry.

TSS/ADAS and headlamp recalibration. Toyota Safety Sense (Pre-Collision System, Lane Departure Alert, automatic high beams) and headlamp aim must be checked and recalibrated after installation — the lift alters camera, radar, and headlamp angles.

SAE J2492 Safety Warning: By installing this product, you acknowledge that the suspension of this vehicle has been modified. As a result, this vehicle may handle differently than factory-equipped vehicles. As with any vehicle, extreme care must be used to prevent loss of control or roll-over during sharp turns or abrupt maneuvers. Always wear seat belts, and drive safely, recognizing that reduced speeds and specialized driving techniques may be required. Failure to drive this vehicle safely may result in serious injury or death. Do not drive this vehicle unless you are familiar with its unique handling characteristics and are confident of your ability to maintain control under all driving conditions. Some modifications (and combinations of modifications) are not recommended and may not be permitted in your state. Consult your owner's manual, the instructions accompanying this product, and state laws before undertaking these modifications. You are responsible for the legality and safety of the vehicle you modify using these components.

Common Questions

Does this fit the Land Cruiser as well as the 4Runner?
Yes — 2025 4Runner (6th Gen) and 2024–2025 Land Cruiser are both confirmed, provided the vehicle has factory rear coil springs. It does not fit air-suspension variants.

Will it fit my TRD Pro or Trailhunter?
No. TRD Pro and Trailhunter run different factory suspension and are excluded, and the factory TRD skid plate won't work with this kit. Text (469) 407-7538 with your trim and we'll point you to the right option.

Can I really run 35s?
Yes, with minor trimming — a 35x12.50R17 fits with light trimming. If you want a no-trim setup, up to 285/75R17 on a 17x8 +35 clears without cutting. Always test fit your exact wheel-and-tire combo first.

Do I have to install the differential drop?
Yes — it's not optional. The diff drop keeps the CV axle angles correct at 3" of front lift. Skipping it runs the CVs at an angle they aren't designed for and shortens their life.

Do I need an alignment and ADAS recalibration afterward?
Both. A 4-wheel alignment is mandatory, and Toyota Safety Sense plus headlamp aim must be recalibrated because the lift changes camera, radar, and light angles.

The Obsidian Take

The 69-55300 is ReadyLIFT's complete 3" SST system for the 2025 4Runner (6th Gen) and 2024–2025 Land Cruiser — 3" of front lift on billet aluminum strut spacers, 2" of rear on powder-coated steel spring spacers, with tubular UCAs, a full differential drop, and rear shock extensions included. This is a full geometry-corrected system, not a spacer-and-hope leveling kit.

The differential drop is what separates this from a basic spacer lift. Three inches of front lift steepens the CV axle angles enough to matter; the diff drop resets them and frees up over 3" of down travel, which is why the front end stays composed on rough terrain instead of binding the CVs. It's included, and it's mandatory.

The tubular UCAs are the other reason this rides right. Factory arms bind at the ball joint angle a 3" lift creates; the corrected-geometry tubular arms bring the pivot back into range, keeping alignment in spec and the ride close to stock. Add the rear shock extensions preserving factory shock travel, and the whole system is engineered to lift the truck without trading away the ride Toyota built in.

The fitment line to get right is the rear suspension and trim. This kit is factory-rear-coil-only, and it explicitly excludes TRD Pro and Trailhunter — and the TRD skid plate won't clear it. Confirm your trim before you buy.

This SKU is for: 2025 4Runner 6th Gen and 2024–2025 Land Cruiser owners on factory rear coil springs who want a complete, geometry-corrected 3" lift with diff drop and UCAs included, room for up to 285/75R17 with no trim (or 35s with minor trimming), and factory ride quality preserved.

This SKU is NOT for: 5th Gen 4Runner owners, TRD Pro or Trailhunter owners, air-suspension variants, factory-lifted trucks, or anyone who plans to skip the differential drop, the post-install alignment, or the TSS/ADAS recalibration.

Closing Blocks

Manufacturer Data Disclaimer
Product specifications, fitment data, and feature details are sourced from ReadyLIFT Suspension manufacturer documentation and verified third-party technical references current at the time of publication. ReadyLIFT reserves the right to modify product specifications without notice. Confirm generation (6th Gen 4Runner), model year, trim, and factory rear suspension type (coil spring vs. air) before ordering. OFAS is not responsible for incompatibility resulting from 5th-Gen misidentification, TRD Pro/Trailhunter or air-suspension misapplication, factory-lift misidentification, omission of the differential drop, or failure to complete post-installation alignment and TSS/ADAS recalibration. Obsidian Forged Auto Supply is an authorized ReadyLIFT dealer.

Prop 65 Warning
⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Non-Returnable Notice
This item is non-returnable once installed. Verify generation, model year, trim, and factory rear suspension type before ordering. Questions before ordering? Text (469) 407-7538.