KYB 3440133 Suspension Shock Absorber - Rear

KYB Excel-G Rear Shock for Mazda 3

KYB Excel-G shock absorber 3440133 is a rear suspension replacement for 2019-2025 Mazda 3 models. It is built to restore original ride control, stability, braking response, lane-change feel, and handling balance without changing the vehicle’s factory tuning.

Key Features

• Fits 2019-2025 Mazda 3, rear
• Nitrogen gas-charged, twin-tube shock absorber design
• OE-style calibration for factory ride and handling characteristics
• Made on KYB OE assembly lines using OE-quality components
• Compressed length: 16.5 in; extended length: 23.38 in; stroke length: 6.88 in
• Lower mount type: E2 (12x40); upper mount type: S1 (8MM)

Product Details

The KYB Excel-G line is positioned as an Original Equipment for the Aftermarket solution, built to match the vehicle’s original suspension behavior rather than alter it. For Mazda 3 rear suspension service, part number 3440133 provides a direct replacement option for drivers and technicians looking to restore consistent damping performance on 2019, 2020, 2021, 2022, 2023, 2024, and 2025 Mazda 3 models. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Excessive bouncing after bumps
• Reduced rear-end stability during cornering
• Longer stopping feel caused by worn damping
• Loose or unsettled ride quality on the Mazda 3
• Uneven response during lane changes and road transitions

Installation Notes and Tips

Verify rear fitment by year and position before installation. Compare the original shock’s compressed length, extended length, and mount style to KYB 3440133 to confirm proper replacement. Inspect related suspension components such as mounts, bushings, and tires during service so the new shock absorber can perform as intended.

Quality Assurance

KYB supplies shocks and struts to new vehicle manufacturers, and the Excel-G line is produced on the same OE assembly lines with OE-quality components. That manufacturing approach supports consistent fit and factory-style damping for Mazda 3 rear suspension replacement.