KYB 339404 Suspension Strut - Front Right

KYB Excel-G Front Right Strut for Mazda 6

The KYB Excel-G suspension strut, part number 339404, is built to restore original ride control, stability, braking response, and steering feel. It is a direct-fit front right strut for 2014-2017 Mazda 6 models and is calibrated to return the vehicle to its designed handling balance.

Key Features

• Fits 2014-2017 Mazda 6, front right
• KYB Excel-G OEA replacement for OE-style ride control
• 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, steering response, and body movement
• Strong strut body and bracket design helps minimize flex and maintain alignment
• Part number 339404

Product Details

KYB Excel-G struts are manufactured on KYB OE assembly lines using OE-quality components and calibration focused on restoring factory performance rather than changing it. For Mazda 6 owners, this front right strut helps return the suspension to the original control characteristics the vehicle was designed to deliver. The Excel-G line is a practical choice for drivers replacing worn suspension parts on a 2014-2017 Mazda 6, especially when consistent handling and predictable road response matter. This part cross-references Monroe Shocks & Struts 72938 for the same application.

What It Helps Address

• Excessive bouncing or float after hitting bumps
• Reduced steering response during lane changes
• Uneven tire contact caused by worn damping control
• Brake dive and body movement under normal driving
• Noise or instability associated with a worn front right strut

Installation Notes and Tips

Fits 2014-2017 Mazda 6, front right. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify upper mount thread size 12x1.25 and confirm compressed length 14.6, extended length 21.14, and stroke length 6.54 before installation. KYB recommends protecting new struts from dirt, debris, and salt with strut boot SB112. Part number 339404 should be matched to the vehicle’s original suspension configuration before installation.

Quality Assurance

KYB is a major OE supplier, and Excel-G 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 Mazda 6.