KYB 565008 Shock Absorber - Rear

KYB MonoMax Rear Shock for Ford F-150

The KYB MonoMax 565008 is a heavy-duty rear shock absorber built for Ford trucks that work hard, tow, haul, or see rough roads. Its monotube design and large-bore construction support added stability and consistent control for 1997-2004 Ford F-150 and F-150 Heritage rear applications.

Key Features

• Up to 40% more damping performance than standard shock absorbers
• Monotube truck shock design for improved handling and control
• Zinc-coated stainless steel piston ring for sealing in severe conditions
• Rubber dust boot helps protect the shaft from dirt and debris
• Engineered to work with vehicles equipped with electronic safety systems such as ESC and ABS
• Rear shock absorber with compressed length of 14.76 in., extended length of 23.74 in., and stroke length of 8.98 in.

Product Details

MonoMax is KYB’s heavy-duty shock line for trucks and other higher-demand vehicles. This KYB MonoMax 565008 uses a monotube layout that responds quickly to changing road conditions and helps maintain fade-resistant performance under load. It is a strong choice for drivers looking for a rear suspension shock absorber for a Ford F-150 or Ford F-150 Heritage that sees towing, hauling, or off-road use. This part cross-references Gabriel 77778 for the same application.

Common Problems It Can Address

• Excessive rear-end bounce over bumps and uneven pavement
• Reduced control when towing a trailer or carrying heavy cargo
• Shock fade during repeated load changes or rough-road driving
• Rear suspension instability on trucks with a higher center of gravity
• Wear-related loss of damping performance in the rear suspension

Installation Notes and Fitment

• Fits 2004 Ford F-150 Heritage, rear; upgrade to monotube shock absorbers for improved performance; MonoMax
• Fits 1999-2003 Ford F-150, rear; upgrade to monotube shock absorbers for improved performance; MonoMax
• Fits 1997-2003 Ford F-150, rear; maximum monotube performance upgrade; except 7700 GVW Package; MonoMax

Verify mount style before installation: lower mount type E2(12X38), upper mount type S1. Dust cover included. Rear shock absorber replacement on Ford F-150 models should be matched to the vehicle’s exact year and package notes, especially for 1997-2003 trucks with the 7700 GVW Package exclusion.

Quality Assurance

KYB is known for suspension components engineered for demanding truck use, and the MonoMax line is built around durability, control, and consistent damping performance. Part number 565008 is designed for rear suspension service on the listed Ford applications.