KYB 343413 Shock Absorber - Rear

KYB Excel-G Rear Shock for Mazda 3

KYB Excel-G part number 343413 is a rear suspension shock absorber engineered to restore original ride control, stability, and handling. It is a fitment-based replacement for 2010-2013 Mazda 3 rear applications and is built on KYB OE production lines using OE-quality components.

Key Features

• Fits 2010-2013 Mazda 3, rear
• Excel-G line calibrated to return the vehicle to designed suspension performance
• 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, steering response, and body movement
• Strong strut body and bracket design helps minimize flex and maintain alignment
• Part number 343413

Product Details

The KYB Excel-G line is built for drivers who want the Mazda 3 suspension to operate as intended after shock replacement. This rear shock absorber is designed to restore ride control, lane-change response, and braking stability without changing the vehicle’s original tuning. KYB’s OE-focused manufacturing approach and application-specific damping calibration make 343413 a direct choice for rear suspension service on the 2010-2013 Mazda 3.

This part cross-references Monroe Shocks & Struts 5697 and 33210 for the same application.

Common Problems This Part Can Address

• Excessive bouncing or oscillation after bumps
• Loose rear-end feel during cornering or lane changes
• Reduced tire contact and uneven handling response
• Oil seepage or gas loss from a worn shock absorber
• Noise or vibration from aged rear suspension damping

Installation Notes and Tips

For best results, inspect related rear suspension components before installation. KYB recommends replacing the rear strut mount components, part number SM5619, to reduce noise and vibration, and using a KYB strut boot, part number SB125, to help protect the new unit from dirt, debris, and salt. Additional components, dust cover, or bushings may be required depending on the vehicle’s existing setup.

Quality Assurance

KYB is a major OE supplier, and Excel-G shocks are produced on the same KYB assembly lines used for original equipment applications. The 343413 rear shock uses OE-quality components and application-specific damping to support consistent suspension performance on the Mazda 3.