KYB 334270 Suspension Strut - Rear Left

KYB Excel-G Rear Left Strut for Lexus RX300

KYB Excel-G part number 334270 is a rear left suspension strut for 1999-2003 Lexus RX300 models. It is built to restore original ride control, steering response, and body stability without changing the vehicle’s designed handling balance.

The Excel-G line is KYB’s OE-style replacement series, using nitrogen gas-charged, twin-tube construction and OE-quality components assembled on KYB production lines. For Lexus RX300 owners looking for a direct replacement rear strut, 334270 is built around factory-style performance and alignment control.

Key Features

• Fits 1999-2003 Lexus RX300, rear left
• KYB Excel-G OE-style replacement for Asian SUVs and crossovers
• Nitrogen gas-charged, twin-tube suspension strut design
• 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
• Part number 334270

Detailed Description

KYB 334270 is engineered for the rear left position on the Lexus RX300 and is intended to restore the vehicle’s original ride control characteristics. The Excel-G platform is built to OE standards, with damping calibration focused on factory-like handling, braking stability, lane-change response, and suspension control. This makes it a practical choice for replacing a worn rear strut on 1999-2003 Lexus RX300 models.

This part cross-references Monroe Shocks & Struts 72104 for the same application. The KYB Excel-G line is also commonly selected by technicians who want an OE-style replacement that preserves the vehicle’s original suspension behavior. Part number 334270 is a direct fitment reference for the rear left side on the Lexus RX300.

What It Helps Address

• Excessive bouncing or poor damping at the rear suspension
• Reduced stability during braking and lane changes
• Uneven tire contact caused by worn strut control
• Noisy or loose-feeling rear suspension response
• Loss of factory ride balance on Lexus RX300 models

Installation Notes and Tips

Fits 1999-2003 Lexus RX300, rear left. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. KYB recommends installing new strut mounts, part number SM5175, to reduce noise and vibration. A KYB strut boot, part number SB101, can help protect the new strut from dirt, debris, and salt.

Compressed length is 17.87 in., extended length is 25.91 in., and stroke length is 8.03 in. Upper mount type is 14X1.50. This application includes an R-stop.

Quality Assurance

KYB is a major OE supplier, and the Excel-G line is produced on the same KYB assembly lines used for original equipment applications. The design uses OE-quality components and factory-style damping calibration to support consistent suspension performance on the Lexus RX300. Part number 334270 is built as an OE-style replacement for the rear left position.