KYB 5510044 Suspension Strut - Rear

KYB Gas-a-Just Rear Strut for Mazda MX-5 Miata

The KYB Gas-a-just 5510044 is a rear suspension strut for the 2016-2025 Mazda MX-5 Miata, excluding Sport Suspension models. It is built as an OE-style monotube replacement to restore factory ride control, with quick response for everyday driving and added damping performance when road conditions demand it.

Gas-a-Just Product Line

KYB Gas-a-just struts use a monotube design with separate working chambers: an air-free hydraulic piston and valve area for consistent control, plus a high-pressure nitrogen gas chamber with a floating piston. That layout supports a comfortable ride during normal use while delivering firmer response when the suspension is loaded harder. Part number 5510044 follows that design for the rear of the Mazda MX-5 Miata.

Key Features

• Rear suspension strut for 2016-2025 Mazda MX-5 Miata
• OE monotube replacement for factory-style suspension restoration
• Monotube construction for responsive damping and control
• High-pressure nitrogen gas chamber for added performance on demand
• Compressed length: 15.47 in.
• Extended length: 22.17 in.
• Stroke length: 6.7 in.
• Upper mount type: 10x1.25
• Lower mount type: Special
• Dust cover not included

Detailed Description

KYB 5510044 is engineered for the rear suspension of the Mazda MX-5 Miata and is listed for 2016-2025 model years, excluding Sport Suspension applications. As a Gas-a-just strut, it uses a monotube layout that separates hydraulic control from the gas charge, helping maintain consistent damping response and ride quality. This makes it a direct-fit option for drivers looking to restore rear suspension behavior on the MX-5 Miata without changing the vehicle’s original suspension character.

This part cross-references Monroe Shocks & Struts (e.g., NA1J2870XA, NC9H2870XB) for the same application.

What It Helps Address

• Excessive rear-end bounce over uneven pavement
• Reduced damping control from worn original struts
• Rear suspension instability during braking or cornering
• Harsh or inconsistent ride quality from aging components
• Loss of factory ride response on the Mazda MX-5 Miata

Installation Notes and Tips

Compatible With 2016-2025 Mazda MX-5 Miata rear applications, excluding Sport Suspension models. Verify the upper mount thread size of 10x1.25 and the special lower mount configuration before installation. Compare compressed length, extended length, and stroke length to the removed part to confirm proper suspension travel. Dust cover is not included, so reuse or replace related protective components as needed during service.

Quality Assurance

KYB is a recognized OE supplier, and the Gas-a-just line is built as an OE monotube replacement to help restore original suspension capability on the Mazda MX-5 Miata. Part number 5510044 is manufactured to support consistent rear suspension control and fitment for the listed application.