KYB 334509 Suspension Strut - Front Left

KYB Excel-G Front Left Strut for Kia

KYB Excel-G suspension strut 334509 is an OE-style replacement built to restore original ride control, stability, braking response, and steering feel. It is a direct-fit front left strut for select Kia Optima, Rondo, and Magentis models, with calibration focused on factory-like handling rather than changing the vehicle’s character.

The Excel-G line is KYB’s OE replacement series, produced on KYB assembly lines using OE-quality components and nitrogen gas-charged twin-tube construction. For Kia Optima and Kia Magentis owners looking for a front left suspension strut that matches original design intent, part number 334509 is a practical service replacement.

Key Features

• OE-style replacement strut for Asian vehicles
• Restores designed control, handling, and lane-change response
• Nitrogen gas-charged, twin-tube design
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact and body movement
• Strong strut body and bracket design helps minimize flex and maintain alignment
• Made in the USA
• R-stop rebound control feature included

Product Details

KYB Excel-G 334509 is engineered as an Original Equipment for the Aftermarket replacement for the front left position. It uses a 12x1.25 upper mount type and measures 14.29 inches compressed length, 20.92 inches extended length, and 6.63 inches stroke length. The design is focused on preserving factory suspension behavior, which is important for vehicles that rely on the suspension, brakes, and tires working together as intended by the manufacturer.

This part cross-references Monroe Shocks & Struts 71136 for the same application. It also cross-references Kia OE numbers 546511D100, 546511D101, 546512G300, and 546512G310.

What It Helps Fix

• Excessive front-end bounce or float
• Reduced steering response during lane changes
• Uneven tire contact caused by worn damping
• Brake dive and unstable stopping feel
• Suspension noise or poor ride control from a worn front left strut

Installation Notes

Fits 2007-2010 Kia Optima, front left. Fits 2007-2010 Kia Rondo, front left. Fits 2007-2009 Kia Magentis, front left. Fits 2006 Kia Magentis, front left, New Style. Fits 2006 Kia Optima, front left, New Style. Verify the vehicle’s front left application and compare mount type and dimensions before installation. A professional alignment is recommended after strut replacement to help restore correct suspension geometry.

Quality Assurance

KYB is a major OE shock and strut supplier, and the Excel-G line is built on the same KYB OE assembly lines using OE-quality components. That manufacturing approach supports consistent fitment and factory-style performance for Kia Optima, Kia Rondo, and Kia Magentis applications.