KYB SR4644 Suspension Strut and Coil Spring Assembly - Rear Right

KYB Strut-Plus Rear Right Assembly

The KYB Strut-Plus SR4644 is a suspension strut and coil spring assembly for the rear right position on select Toyota Corolla models. Built to restore ride height, handling response, and vehicle stability, it is a direct-fit OE-style replacement for the original rear suspension unit.

Fits 2014-2019 Toyota Corolla, rear right. Fits 2019 Toyota Corolla, rear right, except Japan built vehicle.

Key Features

• Part number SR4644 for the rear right suspension position
• Strut assembly with coil spring for ride height restoration
• OE-restoring KYB strut engineered for original ride and control characteristics
• High carbon steel coil spring matched to vehicle attributes and corner weights
• Boot included
• Internal rebound spring included
• Compressed length: 12.57 in.
• Extended length: 16.75 in.
• Stroke length: 4.18 in.

Product Details

KYB Strut-Plus SR4644 combines a KYB strut with a high carbon steel coil spring to help return the rear suspension to OE ride height and handling balance. As an original equipment supplier, KYB builds this assembly to match the vehicle’s suspension geometry and support stable performance on the Toyota Corolla. This part number SR4644 is a practical replacement when the rear right strut and spring assembly has worn, lost damping control, or no longer maintains proper ride height.

For Toyota Corolla owners searching for a rear right strut and coil spring assembly, SR4644 provides a direct replacement path for 2014-2019 models and 2019 Japan-built exclusions noted in the fitment data. The Strut-Plus line focuses on restoring factory-style suspension behavior rather than changing the vehicle’s ride characteristics.

Common Issues This Part Can Address

• Rear suspension sag or reduced ride height
• Excessive bouncing after bumps
• Reduced stability during cornering or lane changes
• Worn strut damping that affects ride control
• Noise or harshness from a fatigued rear strut assembly

Installation Notes

Install SR4644 at the rear right position only and verify vehicle build details before ordering, especially for 2019 Toyota Corolla applications with Japan-built exclusions. Because this is a complete strut and spring assembly, it should be matched to the correct side and inspected alongside related rear suspension components during service. Professional installation and a post-installation alignment check are recommended after suspension replacement.

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 components and spring specifications.