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Precision Polyurethane Bushings That Restore Control Arm Geometry on FJ Cruiser, GX460, and 4Runner Builds
The SuperPro SPRSPF5115K is a front lower control arm inner fore-and-aft bushing kit engineered for the 2010-2014 Toyota FJ Cruiser, 2010-2023 Lexus GX460, and 2010-2024 Toyota 4Runner platforms. Worn factory rubber bushings allow the lower control arm to shift fore and aft under braking, cornering, and acceleration loads, producing vague steering, accelerated tire wear, and alignment drift that cannot be corrected by simple toe or camber adjustments. The SPRSPF5115K replaces both inner bushing positions with SuperPro's proprietary polyurethane formulation, which resists oil contamination, UV degradation, and the load-cycling fatigue that destroys OEM rubber bushings on lifted or heavier-use platforms. SuperPro's design retains OEM-level noise and harshness isolation while delivering measurably tighter suspension geometry under all driving conditions. The kit covers both sides and includes all necessary hardware. A lifetime warranty is included.
Key Features
- Polyurethane construction resists oil, UV, and fatigue wear that destroys OEM rubber
- Restores fore-and-aft control arm positioning for precise alignment retention
- Grease retention design built into each bushing for long-term smooth and silent operation
- OEM-level noise and harshness isolation retained through SuperPro material formulation
- Covers front lower control arm inner fore and aft positions on both sides
- Direct OEM-fit dimensions, no drilling or modification required
- Lifetime warranty from SuperPro
- Ideal for stock, lifted, and modified 4Runner, FJ Cruiser, and GX460 applications
Fitment
| Year Range | Make | Model |
|---|---|---|
| 2010-2014 | Toyota | FJ Cruiser |
| 2010-2023 | Lexus | GX460 |
| 2010-2024 | Toyota | 4Runner |
Specifications
| Detail | Value |
|---|---|
| Part Number | SPRSPF5115K |
| Brand | SuperPro |
| Material | Polyurethane |
| Position | Front Lower Control Arm Inner Fore and Aft |
| Coverage | Both Sides (Driver and Passenger) |
| Warranty | Lifetime |
| Installation | Press or bushing tool recommended |
| UPC | N/A |
What's Included
- SPRSPF5115K polyurethane front lower control arm inner fore-and-aft bushing set
- Hardware and sleeves for both sides included
About SuperPro
SuperPro has been engineering polyurethane suspension components in Australia for nearly 50 years, developing a catalog that covers thousands of vehicle applications across 4x4, performance, and passenger car platforms. SuperPro's bushing compound is formulated to maintain OEM noise and harshness isolation while outlasting factory rubber in all conditions including off-road, track, and daily driving use. The SPRSPF5115K reflects decades of development specifically for the harsh suspension loading conditions experienced by body-on-frame and IFS 4x4 platforms in Australia and globally.
Frequently Asked Questions
What does the SPRSPF5115K address on the FJ Cruiser, GX460, and 4Runner?The SPRSPF5115K replaces the inner fore-and-aft bushings in the front lower control arm, which are the primary pivot bushings that control the arm's positioning under braking and cornering loads. Worn bushings at this position produce steering wander, alignment drift, and poor front-end response that cannot be corrected by alignment alone.
Does the SPRSPF5115K require a bushing press for installation?Yes. Removing the old factory rubber bushings and pressing in the SPRSPF5115K polyurethane bushings requires a press or hydraulic bushing removal tool. The control arm may need to be removed from the vehicle to access the inner bushing positions properly. Professional installation by a suspension shop is recommended.
Does the SPRSPF5115K fit KDSS-equipped 4Runner and GX460 models?Yes. The SPRSPF5115K is designed for the front lower control arm inner bushing positions on all 2010-2024 4Runner and 2010-2023 GX460 models regardless of KDSS or non-KDSS configuration. The inner control arm bushing position is not affected by the KDSS sway bar system.
Will the SPRSPF5115K work on a lifted 4Runner with larger tires?Yes. The SPRSPF5115K is particularly well-suited for lifted applications where larger wheels and tires increase the load cycling on front suspension components. The polyurethane compound is more resistant to deformation under increased loads than OEM rubber, making it a standard upgrade for lifted 4Runner, FJ Cruiser, and GX460 builds.
How does the SPRSPF5115K compare to the OEM Toyota rubber bushing?The OEM Toyota rubber bushing degrades through oil contamination, ozone exposure, and load fatigue over time. The SPRSPF5115K polyurethane resists all three failure modes while maintaining OEM-level NVH isolation through SuperPro's specific compound formulation. The result is longer bushing life and more consistent suspension geometry over the service life of the vehicle.
What alignment changes should I expect after installing the SPRSPF5115K?Replacing severely worn control arm bushings with the SPRSPF5115K may shift alignment readings back toward factory specification as the fore-aft positioning of the lower control arm is restored. A full four-wheel alignment is recommended after any control arm bushing replacement to confirm and set alignment to specification.
Does the SPRSPF5115K fit the Land Cruiser Prado 150?SuperPro engineers a dedicated bushing kit for the Land Cruiser Prado 150 platform. The SPRSPF5115K is confirmed for the FJ Cruiser, GX460, and 4Runner which share a closely related independent front suspension design, but verify with SuperPro's fitment guide if ordering for a Prado 150.
Is a wheel alignment required after installing the SPRSPF5115K?Yes. Any control arm bushing replacement that alters the arm's fore-aft position should be followed by a full alignment. This is true even if the previous bushings appeared to be at spec, as the new bushings may restore the arm to a slightly different position than the worn components allowed.
Installation Instructions
- Safely lift and support the vehicle, removing the front wheel on the side being serviced.
- Support the lower control arm with a jack stand to take load off the arm before removing fasteners.
- Disconnect any sway bar end link or stabilizer bar hardware attached to the lower control arm if necessary for access.
- Remove the lower control arm inner mounting bolt at both the fore and aft bushing positions.
- Drop or remove the lower control arm from the vehicle to access the inner bushings fully.
- Use a hydraulic press or bushing driver set to press the factory inner bushings out of the control arm.
- Clean and inspect the control arm bores before pressing in the SPRSPF5115K polyurethane bushings.
- Press the SPRSPF5115K bushings into position using appropriate driver tools, ensuring flush and even seating.
- Reinstall the control arm, torque all fasteners to OEM specification, and reinstall the wheel.
- Perform a full four-wheel alignment after installation.
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
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