KYB 339244 Suspension Strut - Rear Right

KYB Excel-G Rear Right Strut for Lexus RX350

KYB Excel-G suspension strut 339244 is an OE-style replacement for the rear right position on 2008-2009 Lexus RX350 models without air suspension. It is calibrated to restore original ride control, stability, steering response, and handling for this Lexus RX350 application.

Key Features

• Fits 2008-2009 Lexus RX350, rear right, recommended OEM replacement; excludes air suspension
• KYB Excel-G line is built to restore factory ride characteristics rather than change them
• Nitrogen gas-charged twin-tube design for consistent damping performance
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Strong strut body and bracket design helps minimize flex and maintain alignment
• Made in USA

Detailed Description

The KYB Excel-G 339244 is part of KYB’s Excel-G product line, an OE replacement series built on the same assembly lines and with the same quality standards used for original equipment supply. For Lexus RX350 owners, this rear right suspension strut is engineered to restore the vehicle’s designed ride control and handling balance, making it a practical choice when replacing a worn strut on 2008-2009 models without air suspension. This part cross-references Monroe Shocks & Struts 72772 for the same application.

Part number 339244 is designed for drivers who want factory-correct suspension behavior, including stable lane changes, predictable braking response, and controlled body motion. The Excel-G platform is commonly selected for OE-style service on Asian SUVs and crossovers, including Lexus RX350 rear suspension service.

What It Helps Address

• Excessive bouncing or oscillation from a worn rear strut
• Reduced stability during braking and lane changes
• Loose or inconsistent rear suspension control
• Uneven tire contact caused by degraded damping
• Noise and vibration associated with aging suspension components

Installation Notes and Tips

Compatible With 2008-2009 Lexus RX350, rear right, excluding air suspension. KYB recommends replacing the strut mount with SM5491 to reduce noise and vibration, and using strut boot SB104 to help protect the new strut from dirt, debris, and salt. Verify upper mount thread specification 14X1.50 and confirm compressed length 15.40, extended length 22.81, and stroke length 7.41 before installation.

Quality Assurance

KYB is a major OE shock and strut supplier, and the Excel-G line is classified as an Original Equipment for the Aftermarket replacement. Part number 339244 is built to OE-quality standards on KYB production lines and uses components selected to restore original suspension performance for the Lexus RX350.