KYB 344455 Shock Absorber - Rear

KYB Excel-G Rear Shock Absorber

The KYB Excel-G 344455 is a rear suspension shock absorber built to restore original ride control, stability, and handling response. It is a nitrogen gas-charged, twin-tube design made on KYB OE assembly lines with OE-quality components for a direct replacement approach.

Compatible with 2003-2006 Infiniti G35 rear and 2003-2005 Nissan 350Z rear, this KYB Excel-G shock is a practical choice for drivers looking to return suspension performance to factory-designed behavior. The 344455 is also a common OE-style replacement reference for Nissan and Infiniti applications.

Key Features

• OE-style replacement shock absorber for Asian performance vehicles
• Restores designed control, handling, lane-change response, and braking stability
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact and body motion
• Supports proper operation of electronic safety systems by maintaining suspension behavior as engineered
• Heavy-duty strut body and bracket construction helps minimize flex and maintain alignment
• Rear application with compressed length of 14.21 in., extended length of 19.92 in., and stroke length of 5.71 in.

Product Details

KYB Excel-G is KYB’s Original Equipment for the Aftermarket line, focused on restoring the vehicle’s original suspension characteristics rather than changing ride feel. The 344455 uses a twin-tube, gas-charged design and OE-calibrated damping to help keep the rear suspension working the way the manufacturer intended. This part cross-references Monroe Shocks & Struts (e.g., 5795) for the same application.

For 2003-2006 Infiniti G35 rear and 2003-2005 Nissan 350Z rear applications, the KYB 344455 supports consistent tire contact, steering response, and body control. It is a direct-fit suspension shock absorber for drivers replacing worn rear dampers on these models.

What It Helps Address

• Excessive bouncing after bumps
• Loose or unstable rear-end handling
• Longer stopping distances caused by worn suspension control
• Uneven tire contact and reduced road holding
• Noisy or inconsistent ride behavior from aging rear shocks

Installation Notes

Fits 2003-2006 Infiniti G35, rear, recommended OEM replacement; w/ Sport Suspension; Excel-G. Fits 2003-2005 Nissan 350Z, rear; replace the suspension strut and coil spring assembly according to the manufacturer’s instructions; Excel-G. KYB recommends installing new strut mounts, part number SM5482, to reduce noise and vibration. Verify upper and lower mount types before installation, and confirm suspension condition on the vehicle before final assembly.

Quality Assurance

KYB supplies shocks and struts to new vehicle manufacturers, and the Excel-G line is produced on the same OE assembly lines using OE-quality components. The 344455 is calibrated to restore original performance characteristics and is classified by KYB as Original Equipment for the Aftermarket.