KYB 341121 Suspension Strut - Rear

KYB Excel-G Rear Suspension Strut

The KYB Excel-G 341121 is a rear suspension strut built to restore original ride control, stability, and steering response. It is a direct-fit OE-style replacement for select Mitsubishi Eclipse, Plymouth Laser, and Mitsubishi Galant applications, including rear strut service on 1990-1994 Mitsubishi Eclipse and 1992-1994 Plymouth Laser models.

Key Features

• KYB recommended OEM replacement strut for factory-style ride restoration
• Nitrogen gas-charged, twin-tube design for consistent damping performance
• 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 construction helps minimize flex and maintain alignment
• Designed to support electronic safety systems by preserving suspension behavior as engineered
• Part number 341121 is part of the KYB Excel-G line, calibrated to restore original performance rather than alter it

Product Details

KYB Excel-G is KYB’s OE replacement line for drivers who want factory-correct suspension behavior. This rear suspension strut uses the same type of OE-quality components and assembly approach found on KYB’s original equipment production lines. For 1990-1994 Mitsubishi Eclipse rear applications, 1992-1994 Plymouth Laser rear applications, and 1990-1992 Mitsubishi Galant rear applications, the 341121 helps return the vehicle to its designed control characteristics. This part cross-references Monroe Shocks & Struts 71243 for the same application.

What This Strut Helps Address

• Excessive rear bounce or oscillation
• Reduced stability during lane changes and cornering
• Poor tire contact and uneven suspension response
• Noise or vibration from worn rear strut components
• Loss of original ride control on Mitsubishi Eclipse, Plymouth Laser, and Mitsubishi Galant rear suspension systems

Installation Notes and Tips

Fits 1990-1994 Mitsubishi Eclipse, rear; 1992-1994 Plymouth Laser, rear; and 1990-1992 Mitsubishi Galant, rear. For Mitsubishi Eclipse and Plymouth Laser applications, replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. KYB recommends new strut mounts, part number SM5091, to reduce noise and vibration, and a KYB strut boot, part number SB107, to help protect the strut from dirt, debris, and salt. Compressed length is 15.16, extended length is 22.56, stroke length is 7.4, with E2(12X55) lower mount and S1 upper mount.

Quality Assurance

KYB is a major OE supplier of shocks and struts, and the Excel-G line is assembled on KYB OE production lines using OE-quality components. The 341121 is engineered as an Original Equipment for the Aftermarket replacement to restore designed suspension performance on the listed rear applications.