Rear Stabilizer Bar Bushings That Restore Roll Control and Eliminate Chassis Rattle on an Aging GX460
The Energy Suspension 8.5158R is the Hyper-Flex polyurethane rear sway bar bushing set for the 2010-2022 Lexus GX460 in red. The rear stabilizer bar on the GX460 runs through two chassis bracket liners that hold the bar in position and allow it to rotate as the rear suspension cycles. As the factory rubber in these brackets ages, it cracks, compresses, and loses its grip on the bar, producing lateral bar movement, rear-end rattling over bumps, and progressively vague body roll response on cornering. The ENG8.5158R replaces both OEM rubber rear bracket liners with Energy Suspension's Hyper-Flex polyurethane compound, restoring proper rear stabilizer bar retention and sharpening rear body roll control without any change to bar setup or ride height. Designed for all 2010-2022 Lexus GX460 configurations.
Key Features
- Energy Suspension ENG8.5158R Hyper-Flex polyurethane rear sway bar bushing set for 2010-2022 Lexus GX460
- Replaces both factory rubber rear stabilizer bar bracket liners that cause rattling and imprecise body roll control as they age
- Hyper-Flex polyurethane maintains proper bar retention, outlasts OEM rubber, and resists heat and ozone degradation
- Full-floating design allows proper bar rotation without binding
- Red color; black version available separately as ENG8.5158G
- Made in USA by Energy Suspension
Fitment
| Year Range | Make | Model |
|---|---|---|
| 2010-2022 | Lexus | GX460 |
Specifications
| Detail | Value |
|---|---|
| Part Number (MPN) | 8.5158R |
| Brand | Energy Suspension |
| Series | Hyper-Flex |
| Type | Rear Sway Bar Bushing Set |
| Color | Red |
| Material | Hyper-Flex polyurethane |
| Position | Rear stabilizer bar chassis brackets (both sides) |
| Fitment | 2010-2022 Lexus GX460 |
| Country of Origin | USA |
| Prop 65 | Yes |
| UPC | 703639124498 |
What's Included
- 2 Hyper-Flex polyurethane rear sway bar bushings
- Energy Suspension grease packet
About Energy Suspension
Energy Suspension has manufactured Hyper-Flex polyurethane suspension components in the United States since 1983. Based in San Clemente, California, Energy Suspension produces application-specific bushing sets, body mounts, sway bar bushings, and supporting hardware for thousands of domestic and import vehicle applications. Their Hyper-Flex compound is formulated to deliver significantly longer service life than OEM rubber while maintaining handling precision appropriate for street use.
Frequently Asked Questions
What is the Energy Suspension 8.5158R?The Energy Suspension 8.5158R is the Hyper-Flex polyurethane rear sway bar bushing set for the 2010-2022 Lexus GX460 in red. It replaces both factory rubber rear stabilizer bar bracket liners with polyurethane bushings that restore proper rear bar retention, eliminate rear-end sway bar rattle, and sharpen rear body roll control on aging GX460s.
What years of Lexus GX460 does the 8.5158R fit?The Energy Suspension 8.5158R fits the 2010-2022 Lexus GX460. It does not fit the GX470 (2003-2009), which uses a different rear suspension and stabilizer bar configuration. Confirm your year before ordering.
What causes rear sway bar rattle on the GX460?Rear sway bar rattle on the GX460 most commonly originates from two sources: worn rubber bracket bushings (the mounts on the chassis) or worn end links. The ENG8.5158R addresses the bracket bushings. If rattle persists after replacing the bracket bushings, inspect the rear sway bar end links, which are a separate wear item and not included in this kit.
Does the 8.5158R require any special tools?No. Rear sway bar bracket bushing replacement is a basic hand-tool job. The bracket bolts are accessible from underneath the vehicle. No press is required as this is a clamp-style bracket design. The job typically takes under an hour with the vehicle on jack stands.
Should I replace front and rear sway bar bushings at the same time?Yes. On a high-mileage GX460, both the front and rear sway bar bracket bushings degrade at a similar rate from the same environmental and use factors. Replacing both at the same time with the Energy Suspension 8.5157R front set and 8.5158R rear set restores the full stabilizer system and prevents having to return for the second axle shortly after completing the first.
Does the ENG8.5158R include grease?Yes. The ENG8.5158R includes an Energy Suspension grease packet. Apply grease to the inside bore of each bushing before installation to ensure proper bar rotation and prevent squeaking. Use only polyurethane-compatible grease. Petroleum-based greases will degrade the polyurethane.
Is the 8.5158G (black) the same as the 8.5158R (red)?Yes. The Energy Suspension 8.5158G and 8.5158R are the same rear sway bar bushing set in different colors. Construction, compound, and fitment are identical. G is black, R is red.
Can I install the ENG8.5158R without removing the rear sway bar?In most cases, the rear sway bar bracket bushings can be replaced without fully removing the sway bar from the vehicle. Loosening or disconnecting the end links provides enough slack to rotate the bar out of the bracket and slide the new bushing into position. Full bar removal is typically not required but depends on the vehicle's specific rust and clearance conditions.
Installation Instructions
- Lift and safely support the rear of the GX460 on jack stands with the suspension at a comfortable working height.
- Locate the two rear sway bar bracket housings on the rear subframe or chassis, one on each side of the stabilizer bar.
- Loosen or disconnect the rear sway bar end links on both sides to provide slack in the bar if needed for bushing access.
- Remove the two bolts securing the sway bar bracket to the chassis on one side.
- Remove the old rubber bushing. A flathead pry may be needed if the rubber has bonded to the bracket from age.
- Apply the included Energy Suspension grease to the inside bore of the new 8.5158R bushing.
- Position the new bushing around the sway bar and into the bracket with the split facing the front of the vehicle.
- Reinstall the bracket bolts and torque to factory specification.
- Repeat on the opposite side.
- Reconnect any loosened end links and torque to factory specification.
- Lower the vehicle and verify the sway bar rotates freely with no clunking before driving.
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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