Firm up front ride control with the KYB Gas-a-just Suspension Strut 5510017, a front high-pressure monotube gas strut that installs as a direct-fit replacement for the 2017-2023 Lexus GX460, 2010-2024 Toyota 4Runner, and 2010-2014 Toyota FJ Cruiser (see the Buyer's Guide tab for engine details). KYB built its components and valving specifically for the Toyota 4Runner and Toyota FJ Cruiser, adding extra damping over the OE design for vehicles that work, tow, and run larger, heavier tires and wheels.
- Monotube gas design: The high-pressure monotube separates the nitrogen gas and oil for fade-free operation and instant response, with an air-free hydraulic piston and valve area for control.
- Added damping: Adds up to 25% more damping performance over original-equipment shocks.
- Smooth chrome rod: An ultra-smooth triple-chrome-plated piston rod helps reduce seal wear, since fluid leaking can be a cause of shock failure.
- Safety systems: Helps keep Electronic Safety Systems performing as designed, since they depend on the suspension, brakes, and tires operating as the vehicle manufacturer intended.
To reduce the chance of noise and vibration, KYB recommends installing new strut mounts, part number SM5640.
Interchange: 4851069585 · 4851080494 · 4851080495 · 4851080497 · 4851080498 · 4851080507 · 4851080508
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What is the KYB 5510017?
It is a front high-pressure monotube gas suspension strut (KYB Gas-a-just) that replaces the worn factory front strut on the listed applications.
Which vehicles does it fit?
It is a direct-fit front strut for the 2017-2023 Lexus GX460, 2010-2024 Toyota 4Runner, and 2010-2014 Toyota FJ Cruiser. Check the Buyer's Guide tab to confirm your vehicle.
How does the monotube design work?
The high-pressure monotube separates the nitrogen gas and oil for fade-free operation, using an air-free hydraulic piston and valve area for responsiveness and control.
Should I replace my strut mounts too?
To reduce the chance of noise and vibration, KYB recommends installing new strut mounts, part number SM5640, when fitting this strut.
Are these sold as a pair?
This listing is for one strut. For even, balanced handling it is best practice to replace the struts on both sides of the axle together as a matched set.
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