Get a corner back to factory ride height with the KYB Strut-Plus Suspension Strut and Coil Spring Assembly SR4521, a complete front-left corner unit that pairs a strut, mount and spring in one pre-assembled package. It installs as a direct-fit replacement on the 2011-2016 Scion tC and 2012-2017 Toyota Prius V (see the Buyer's Guide tab for engine details). As a factory-side-specific unit, it is engineered to help restore the handling and control capabilities of your vehicle.
- Complete corner unit: combines a KYB Excel-G strut, mount and coil spring, engineered and pre-assembled for professional results.
- High carbon steel coil springs: developed around the vehicle's attributes and corner weights to help keep ride height within OE specifications.
- OE Restoring KYB strut: a stronger steel outer shell with KYB's application-specific precision-designed damping valves.
- Side-specific design: built as left and right part numbers with side-specific components, as the vehicle manufacturer intended; engineered to help vehicles with electronic safety systems (ESC, ABS, etc.).
Named the #1 recommended Original Equipment replacement choice for Asian vehicles and winner of Best Overall Import Aftermarket Product.
Interchange: 172683
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this assembly include?
It's a complete front-left corner unit combining a KYB Excel-G strut, the mount, and a high carbon steel coil spring, all pre-assembled in one package.
Which vehicles does the SR4521 fit?
It's a direct-fit replacement for the 2011-2016 Scion tC and 2012-2017 Toyota Prius V. Check the Buyer's Guide tab to confirm fitment for your vehicle.
What position is this unit for?
This is the front-left corner assembly. It's built as a side-specific part number, so order the matching unit for the opposite corner if needed.
What does a strut assembly do?
A strut helps support vehicle weight, sets ride height, acts as the steering pivot, and helps control stability, and can affect electronic crash-avoidance systems.
Should I replace both sides together?
Replacing struts in matched pairs is a common best practice for balanced ride and handling. This listing covers one front-left corner unit; order the opposite side separately if needed.
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