Bring back controlled ride height and factory-style handling with the KYB Strut-Plus Suspension Strut and Coil Spring Assembly SR4418, a complete pre-assembled front-left corner unit combining strut, mount and spring. It installs as a direct-fit replacement for the 2015-2017 Lexus NX200T, 2018-2021 Lexus NX300, 2015-2021 Lexus NX300H and 2013-2018 Toyota RAV4. As an original equipment supplier, KYB builds the Strut-Plus around an OE-restoring Excel-G strut so it is engineered to help restore your vehicle's handling and control.
- Complete corner assembly: pre-assembled strut, mount and spring for professional, exact-fitment results out of the box.
- KYB Excel-G strut: a stronger steel outer shell with KYB's application-specific, precision-designed damping valves.
- High carbon steel coil springs: developed for the vehicle's corner weights to help keep ride height within OE specifications while controlling weight without sacrificing ride quality.
- Side-specific design: left and right part numbers with side-specific components, as the vehicle manufacturer intended; engineered to help vehicles with electronic safety systems (ESC, ABS, etc.).
The #1 recommended OE replacement choice for Asian vehicles and winner of the 2018 Best Overall Import Aftermarket Product award. Sold as a single front-left corner unit.
Interchange: 173014 · 183014
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What position does the SR4418 fit?
It is the front-left (driver-side) complete corner unit. KYB uses left and right part numbers with side-specific design, so order the correct side for your vehicle.
Which vehicles does this assembly fit?
It is a direct-fit replacement for the 2015-2017 Lexus NX200T, 2018-2021 Lexus NX300, 2015-2021 Lexus NX300H and 2013-2018 Toyota RAV4. See the Buyer's Guide tab to confirm your vehicle.
Is any assembly required?
No. The Strut-Plus arrives pre-assembled with the strut, mount and spring together for exact fitment and professional installation results.
What is inside the assembly?
It includes a KYB Excel-G strut with a stronger steel outer shell and application-specific damping valves, an application-engineered high carbon steel coil spring, and the mount.
Should I replace both sides at once?
This listing is one front-left corner unit. Replacing struts as a matched pair is a common best practice for balanced handling; confirm what your service procedure recommends.
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