KYB 565100 Shock Absorber - Rear

KYB MonoMax Rear Shock for Ford Super Duty

The KYB MonoMax 565100 is a heavy-duty rear shock absorber built for 1999-2004 Ford F-250 Super Duty and 1999-2004 Ford F-350 Super Duty applications. It uses a monotube design and a large bore layout to support added stability, control, and durability on trucks that tow, haul, or see off-road use.

Key Features

• Up to 40% more damping performance than standard shock absorbers
• Monotube truck shock design for consistent handling response
• Zinc-coated stainless steel piston ring for sealing in demanding conditions
• Rubber dust boot included to help protect the shaft and seal area
• Engineered to work with vehicles equipped with electronic safety systems such as ESC and ABS
• Rear fitment for Ford F-250 Super Duty and Ford F-350 Super Duty

Product Details

KYB MonoMax is the brand’s heavy-duty shock line for trucks that need firmer control under load. Part number 565100 is built around a monotube construction that helps maintain fade-free performance as driving conditions change. The compressed length is 17.04 inches, extended length is 27.24 inches, and stroke length is 10.2 inches. Mounting is E2(12X38) at the lower end and E1 at the upper end. This part cross-references Monroe Shocks & Struts (e.g., 911194) for the same application.

Common Uses

• Rear-end bounce or instability on a Ford F-250 Super Duty
• Reduced control when towing a trailer with a Ford F-350 Super Duty
• Excessive body movement on trucks carrying heavy loads
• Need for firmer rear suspension response on work trucks
• Shock fade during repeated rough-road or off-road driving

Installation Notes and Tips

Verify rear position, mount style, and dimensions before installation. Confirm that the vehicle is a 1999-2004 Ford F-250 Super Duty or 1999-2004 Ford F-350 Super Duty, since this KYB 565100 is listed for rear applications only. Inspect related suspension components, including bushings and mounting points, before replacing the shock absorber.

Quality Assurance

KYB designs the MonoMax line for truck-duty use with a zinc-coated piston ring and protective dust boot to support long-term service in harsh conditions. The 565100 is engineered for stable damping performance in demanding towing, hauling, and off-road environments.