KYB 344363 Shock Absorber - Rear

KYB Excel-G Rear Shock Absorber

The KYB Excel-G 344363 is a rear suspension shock absorber built to restore original ride control, stability, and steering response. It is a vehicle-specific OE replacement for select Ford, Lincoln, Mazda, and Mercury applications, including rear shock service on the Ford Fusion, Lincoln MKZ, and Mercury Milan.

Key Features

• KYB recommended OEM replacement shock for factory-style ride restoration
• Nitrogen gas-charged, twin-tube design for consistent damping performance
• Triple-lip fluid seal helps reduce oil and gas leakage
• Hand-assembled, vehicle-specific damping valves manage tire contact and body motion
• Strong strut body and bracket construction helps minimize flex and maintain alignment
• Dust cover included for added protection
• R-stop design included

Product Details

Excel-G is KYB’s OE-style product line for drivers who want to restore the suspension behavior the vehicle was originally engineered to deliver. The 344363 uses OE-quality components and is assembled on KYB production lines used for original equipment manufacturing. With compressed length of 11.67 inches, extended length of 17.64 inches, and stroke length of 5.97 inches, this rear shock is built for the specified rear applications and mounting dimensions.

Compatible With 2010-2012 Ford Fusion, rear; 2006-2012 Ford Fusion, rear; 2010-2012 Lincoln MKZ, rear; 2010-2011 Mercury Milan, rear; 2006-2011 Mercury Milan, rear; 2007-2009 Lincoln MKZ, rear; 2003-2008 Mazda 6, rear; and 2006 Lincoln Zephyr, rear. This part cross-references Monroe Shocks & Struts 5784 for the same application.

What It Helps Address

• Excessive rear-end bounce after bumps
• Loose or unsettled handling during lane changes
• Reduced tire contact from worn damping control
• Uneven ride quality caused by aging rear shocks
• Suspension response that no longer matches factory behavior

Installation Notes and Tips

Install according to the vehicle manufacturer’s instructions. For 2006-2012 Ford Fusion, 2006-2011 Mercury Milan, 2007-2009 Lincoln MKZ, and 2003-2008 Mazda 6 applications, replace the suspension strut and coil spring assembly as directed by the manufacturer. Verify rear fitment, mount type, and length specifications before installation. Part number 344363 should be matched to the exact vehicle configuration listed above, including wheel-size notes where applicable.

Quality Assurance

KYB is a major OE shock and strut supplier, and Excel-G is built on the same assembly lines used for original equipment production. The design focuses on restoring factory-calibrated ride control rather than changing suspension character, making the KYB 344363 a practical OE-style replacement for rear suspension service.