KYB 343161 Shock Absorber - Rear

KYB Excel-G Rear Shock for Classic Ford

The KYB Excel-G 343161 is a rear suspension shock absorber built to restore original ride control on classic Ford and Mercury applications. It is a nitrogen gas-charged, twin-tube design made on KYB OE assembly lines with OE-quality components for a direct replacement approach.

For drivers searching for a rear shock for a 1978-1993 Ford Mustang or related classic Ford/Mercury platforms, this Excel-G unit is calibrated to return the vehicle’s designed handling balance, steering response, and body control.

Key Features

• KYB recommended OEM replacement shock for classic domestic cars
• Restores designed control and handling on classic Ford applications
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Supports proper operation of electronic safety systems by helping the suspension perform as engineered
• Strong strut body and bracket construction helps minimize flex and maintain alignment
• Compressed length: 12.01 in; extended length: 20.28 in; stroke length: 8.27 in
• Lower mount type: E2(12.8X38); upper mount type: S1
• Dust cover included

Product Details

KYB Excel-G is the brand’s OEA-style replacement line, focused on restoring factory ride characteristics rather than changing them. Part number 343161 is engineered for rear suspension use on classic Ford Mustang, Mercury Capri, Ford Fairmont, and Mercury Zephyr applications listed below. This part cross-references Monroe Shocks & Struts (e.g., 5845) for the same application.

Compatible With: Fits 1978-1981 Ford Fairmont, rear; Fits 1978-1981 Mercury Zephyr, rear; Fits 1979-1981 Mercury Capri, rear; Fits 1979-1982 Ford Mustang, rear; Fits 1983-1986 Ford Mustang, rear; Fits 1983-1986 Mercury Capri, rear; Fits 1984-1993 Ford Mustang, rear; Fits 1987-1989 Ford Mustang, rear.

What It Helps Address

• Excessive rear-end bounce after shock wear
• Loose or inconsistent handling in turns and lane changes
• Reduced tire contact over uneven pavement
• Oil or gas leakage from an aging shock absorber
• Alignment instability caused by flex in worn suspension components

Installation Notes

Install according to the vehicle manufacturer’s instructions. Some listed Mustang applications require replacement of the suspension strut and coil spring assembly during service. Verify rear fitment, mount style, and dimensions before installation on your Ford Mustang, Mercury Capri, Fairmont, or Zephyr.

Quality Assurance

KYB supplies shocks and struts to new vehicle manufacturers, and the Excel-G line is produced on the same OE assembly lines using OE-quality components. The 343161 is built to restore original suspension performance for the specified classic rear applications.