KYB SR4007 Suspension Strut and Coil Spring Assembly - Rear Right

KYB Strut-Plus Rear Right Strut Assembly

The KYB Strut-Plus SR4007 is a complete suspension strut and coil spring assembly for the rear right position on select Ford, Mercury, and Mazda applications. It is built to restore ride height, handling response, and vehicle stability with OE-style fitment for service work that follows manufacturer procedures.

Key Features

• Complete rear right strut assembly engineered for exact fitment
• Includes a KYB Excel-G strut with application-specific damping valves
• Uses a stronger steel outer shell for added structural support
• High-carbon steel coil spring is matched to vehicle corner weights to help restore OE ride height
• Side-specific design follows the vehicle manufacturer’s left/right configuration
• Engineered to help vehicles equipped with electronic safety systems such as ESC and ABS

Product Line Details

KYB Strut-Plus assemblies combine a KYB OE-restoring strut with a matched coil spring and side-specific components. The line is designed for direct replacement service where restoring original ride height and damping characteristics matters, including rear suspension service on compact Ford, Mercury, and Mazda models.

Detailed Description

KYB SR4007 is built for drivers and technicians replacing a worn rear right suspension strut and coil spring assembly on vehicles such as the 1991-1996 Ford Escort, 1991-1996 Mercury Tracer, and 1990-1994 Mazda 323 and Protege. This assembly is engineered to return the suspension to OE specifications by pairing a KYB strut with a spring selected for the vehicle’s weight and corner load. This part cross-references Monroe Shocks & Struts 171880 for the same application.

What It Helps Address

• Sagging rear ride height
• Excessive bouncing or poor damping control
• Reduced cornering stability
• Uneven rear suspension response
• Service needs on vehicles with ESC, ABS, or related electronic safety systems

Installation Notes

Fits 1991-1996 Ford Escort, rear right. Fits 1991-1996 Mercury Tracer, rear right. Fits 1990-1994 Mazda 323, rear right, excluding electronically adjustable suspension. Fits 1990-1994 Mazda Protege, rear right. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions and verify side, position, and application before installation. SR4007 is a direct-fit rear right assembly for these listed applications.

Quality Assurance

KYB is an original equipment supplier, and the Strut-Plus line is engineered to restore handling, control, and ride height using OE-focused design and application-specific damping.