KYB 551117 Suspension Strut - Front

KYB Gas-a-Just Front Strut for MX-5 Miata

KYB Gas-a-Just 551117 is a front suspension strut built as an OE-style monotube replacement for the Mazda MX-5 Miata. It is engineered to restore original steering response and handling balance while maintaining a controlled ride in normal driving.

The Gas-a-Just line uses a high-pressure monotube design with separate gas and oil chambers for quick response and fade-resistant operation. For the 2006-2015 Mazda MX-5 Miata front suspension, this strut is a direct-fit replacement for drivers who want consistent control with factory-style suspension behavior.

Key Features

• OE monotube replacement for front suspension service
• Restores designed control and handling on the Mazda MX-5 Miata
• High-pressure gas and oil separation for responsive damping
• Triple chrome plated piston rod helps reduce seal wear
• Higher gas pressure supports quicker steering response
• Works well on vehicles that tow, carry load, or use heavier tires and wheels
• Supports proper operation of electronic safety systems that rely on suspension performance

Product Details

KYB Gas-a-Just 551117 is a front suspension strut for 2006-2015 Mazda MX-5 Miata applications. The monotube layout uses an air-free hydraulic piston area for control and a separate high-pressure nitrogen chamber with a floating piston for consistent damping. That design helps maintain ride quality during everyday driving while adding immediate performance when suspension demand increases. This part cross-references Monroe Shocks & Struts (e.g., 72495) for the same application.

What It Helps Address

• Excessive front-end bounce or oscillation
• Reduced steering response on the Mazda MX-5 Miata
• Uneven control after shock or strut wear
• Fluid leakage related to seal wear
• Loss of damping consistency under higher suspension loads

Installation Notes

Fits 2006-2015 Mazda MX-5 Miata, front. Confirm the vehicle is equipped for the listed application and note that this fitment excludes run flat tires. Verify upper and lower mount details before installation, and inspect related suspension components such as mounts, bushings, and tires while the strut is removed. KYB 551117 is a direct replacement for the front position on the listed MX-5 Miata applications.

Quality Assurance

KYB is a recognized OE suspension supplier, and the Gas-a-Just line is built to match factory-style monotube performance characteristics for the Mazda MX-5 Miata. Part number 551117 is designed to restore predictable damping, steering feel, and suspension control in the specified front application.