KYB 339055 Suspension Strut - Front Right

KYB Excel-G Front Right Strut for Infiniti FX

The KYB Excel-G 339055 is a front right suspension strut for 2003-2008 Infiniti FX35 and FX45 models. Built to restore original ride control and handling, it is a direct OE-style replacement for drivers who want factory-correct suspension response.

Key Features

• OE-style replacement for Asian SUVs and crossovers
• Restores designed control, stability, braking response, and lane-change handling
• Nitrogen gas-charged twin-tube construction
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact and body motion
• Strong strut body and bracket design helps minimize flex and maintain alignment
• Internal rebound spring included
• Made in USA

Product Details

KYB Excel-G struts are built on KYB OE assembly lines using OE-quality components and calibration focused on restoring original suspension performance rather than changing it. For Infiniti FX35 and Infiniti FX45 applications, part number 339055 is engineered to support consistent steering response, body control, and suspension behavior that matches the vehicle manufacturer’s intended setup. This part cross-references Monroe Shocks & Struts (e.g., 72369) for the same application.

The KYB Excel-G line is a practical choice when replacing a worn front right strut on a 2003-2008 Infiniti FX35 or 2003-2008 Infiniti FX45. The design supports electronic safety systems by helping the suspension, brakes, and tires operate as intended. KYB 339055 is also identified as a direct OE-style replacement for Infiniti FX applications, making it a strong match for drivers seeking factory-correct ride control.

What It Helps Address

• Excessive bouncing or oscillation after bumps
• Loose or delayed steering response
• Nose dive during braking
• Body roll during lane changes and cornering
• Uneven tire contact caused by worn suspension damping

Installation Notes

Fits 2003-2008 Infiniti FX35, front right. Fits 2003-2008 Infiniti FX45, front right. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify the upper mount type is 12x1.25 and confirm all suspension components are inspected before installation. After replacement, a wheel alignment is recommended to help maintain correct handling and tire wear.

Quality Assurance

KYB manufactures Excel-G on the same OE assembly lines used for original equipment supply, with OE-quality components and vehicle-specific damping calibration. The part features a nitrogen gas-charged twin-tube design, a triple-lip fluid seal, and a strong strut body and bracket structure to support consistent performance in daily driving.