KYB SR4239 Suspension Strut and Coil Spring Assembly - Rear Right

KYB Strut-Plus Rear Right for Corolla

The KYB Strut-Plus SR4239 is a suspension strut and coil spring assembly engineered for the rear right position on select Toyota Corolla models. It combines KYB damping technology with a vehicle-specific coil spring to help restore ride height, handling response, and stability on the 2011-2013 Toyota Corolla.

Key Features

• OE-style replacement choice for Asian vehicles
• Includes a KYB Excel-G strut, a stronger steel outer shell, and application-specific precision damping valves
• Pre-assembled for exact fitment and professional installation results
• Side-specific design with left- and right-hand part numbers as the vehicle manufacturer intended
• Engineered to help vehicles equipped with electronic safety systems such as ESC and ABS
• High-carbon steel coil spring is developed around vehicle attributes and corner weights to help restore OE ride height
• Recipient of a 2018 import aftermarket industry award

Detailed Description

KYB SR4239 is part of the Strut-Plus line, a product family focused on restoring original ride and control characteristics with a complete strut and spring assembly. As an OE supplier, KYB builds this rear right assembly to match the suspension needs of the Toyota Corolla, including spring rate and damping calibration for the application. If you are replacing a worn rear right suspension strut and coil spring assembly on a 2012-2013 Toyota Corolla or a 2011 Toyota Corolla built from 12/2010, this assembly provides a direct-fit service solution. This part cross-references Monroe Shocks & Struts (e.g., 172599R, 282599R) for the same application.

What It Helps Address

• Rear suspension sag or reduced ride height
• Excessive bouncing after bumps
• Loose or unstable rear-end handling
• Uneven damping from a worn strut assembly
• Restoration of factory-style steering and stability behavior on Corolla applications

Installation Notes and Tips

Fits 2012-2013 Toyota Corolla, rear right. Fits 2011 Toyota Corolla, rear right. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify side-specific placement before installation, and confirm the vehicle build date for 2011 Corolla applications noted from 12/2010. Because this is a pre-assembled strut and spring unit, it is intended to streamline service on the rear right corner of the vehicle.

Quality Assurance

KYB designs the Strut-Plus line using OE-based engineering principles and application-specific damping control to help restore handling, ride height, and stability on the Toyota Corolla. The SR4239 is built as a direct replacement for the specified rear right applications and reflects KYB’s role as an original equipment supplier.