KYB SR4221 Suspension Strut and Coil Spring Assembly - Rear Right

KYB Strut-Plus Rear Right Assembly

The KYB Strut-Plus SR4221 is a rear right suspension strut and coil spring assembly built for direct replacement on select Hyundai Tucson and Kia Sportage models. It combines OE-style fitment with application-specific damping and a pre-assembled design for professional-grade service work.

Key Features

• OE-style replacement choice for Asian vehicles
• Includes a KYB Excel-G strut with application-specific precision damping valves
• Stronger steel outer shell for added structural support
• High-carbon steel coil spring engineered around vehicle corner weights and ride height targets
• Exact fitment, pre-assembled for professional results
• Side-specific design for the rear right position, as the vehicle manufacturer intended
• Engineered to support vehicles equipped with electronic safety systems such as ESC and ABS
• Assembled in the USA
• Recipient of a 2018 industry award in the import aftermarket category

Product Details

KYB Strut-Plus SR4221 is designed to restore handling, control, and ride height on the rear right corner of the vehicle. As an OE supplier, KYB builds this assembly around the original suspension layout, using a KYB strut and a matched coil spring to help return the vehicle to factory ride characteristics. This part cross-references Monroe Shocks & Struts (e.g., 172221, 182221) for the same application. Compatible applications include Fits 2005-2010 Kia Sportage, Rear Right and Fits 2005-2009 Hyundai Tucson, Rear Right. For shoppers searching KYB SR4221 rear right strut assembly or Hyundai Tucson rear right suspension strut and coil spring assembly, this part matches the listed applications directly.

What It Helps Address

• Excessive rear suspension bounce or rebound
• Uneven ride height at the rear right corner
• Reduced steering stability and body control
• Worn strut performance affecting braking and cornering feel
• Suspension noise or harsh ride caused by aging strut components

Installation Notes

Install according to the vehicle manufacturer’s instructions and verify rear right fitment before service. Because this is a pre-assembled strut and coil spring assembly, it is intended for direct replacement of the listed rear suspension position on the specified Kia Sportage and Hyundai Tucson applications. Confirm that the vehicle uses the rear right configuration shown in the fitment data before ordering.

Quality Assurance

KYB designs this Strut-Plus assembly as an OE-restoring replacement using application-specific damping and spring rates selected for the listed vehicles. The part is assembled in the USA and built to support factory-style suspension performance on the specified Hyundai Tucson and Kia Sportage applications.