KYB 341321 Suspension Strut - Rear

Rear Strut for 2001-2003 Toyota Prius

Restore rear suspension control on the 2001-2003 Toyota Prius with KYB Excel-G part number 341321. This rear suspension strut is built to return the vehicle to its original ride control, stability, and steering response without changing the factory-tuned feel.

KYB Excel-G is an OE-style replacement line made on KYB’s OE assembly lines using OE-quality components. For Prius owners looking for a direct rear strut replacement, 341321 is calibrated to match the vehicle’s original damping characteristics.

Key Features

• Fits 2001-2003 Toyota Prius, rear
• KYB Excel-G line focused on restoring original suspension performance
• Nitrogen gas-charged, twin-tube design
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Strong strut body and bracket design helps minimize flex and maintain alignment
• R-stop design included
• Cross-references Monroe Shocks & Struts 71376 for the same application

Detailed Description

KYB 341321 is a rear suspension strut for the Toyota Prius that focuses on restoring factory ride control rather than altering suspension behavior. It is designed for the 2001-2003 Prius rear position and is a practical choice when the original strut has lost damping performance, developed noise, or no longer maintains consistent body control. The Excel-G line is widely used for OE-style replacement work because it follows the vehicle’s original tuning and supports predictable handling, braking stability, and lane-change response.

Measured specifications include a compressed length of 12.55 inches, extended length of 18.77 inches, and stroke length of 6.22 inches. Lower mount type is E2(22X40) and upper mount type is S1(12MM). KYB also notes that new strut mounts, part number SM5382, and a strut boot, part number SB108, are recommended to reduce noise, vibration, and contamination exposure.

What This Strut Helps Address

• Excessive rear bounce or float in a Toyota Prius
• Reduced stability during braking and lane changes
• Uneven or inconsistent rear suspension control
• Noise or vibration from worn suspension damping components
• Loss of original ride feel after strut wear

Installation Notes and Tips

Fits 2001-2003 Toyota Prius, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify mount type and dimensions before installation, and inspect related suspension components for wear. For reduced noise and longer service life, KYB recommends replacing the strut mounts and adding a strut boot during service.

Quality Assurance

KYB is a major OE supplier, and the Excel-G line is produced on the same KYB OE assembly lines using OE-quality components. Part number 341321 is built as an Original Equipment for the Aftermarket replacement for the rear suspension on the Toyota Prius.