KYB 565122 Shock Absorber - Rear

KYB MonoMax Rear Shock for Ford F-350 Super Duty

The KYB MonoMax 565122 is a heavy-duty rear shock absorber built for Ford F-350 Super Duty trucks that work hard, tow, haul, or see off-road use. Its monotube design is tuned for added control and stability on higher center-of-gravity and heavier-duty vehicles, with fade-resistant performance under demanding conditions.

Key Features

• Maximum performance upgrade with 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 a positive seal in extreme 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 application for 2005-2016 Ford F-350 Super Duty

Product Details

KYB MonoMax 565122 is part of the MonoMax line, a KYB truck-focused shock absorber series developed for drivers who need firmer control and consistent damping in demanding service. This rear shock uses a large-bore monotube construction to help maintain performance when the truck is loaded, towing, or operating on rough surfaces. The design also supports stable suspension response on Ford F-350 Super Duty models where added control matters.

This part cross-references Monroe Shocks & Struts (e.g., 911265) for the same application. It fits 2005-2016 Ford F-350 Super Duty, rear, and the part number 565122 is the key identifier for ordering and verification.

Common Uses

• Rear-end bounce or instability on a Ford F-350 Super Duty
• Reduced control when towing a trailer
• Excessive body movement with heavy cargo in the bed
• Shock fade during repeated hard use or rough-road driving
• Need for a monotube rear shock upgrade on 2005-2016 Ford F-350 Super Duty

Installation Notes

Verify compressed length, extended length, and mount types before installation: 14.25 in. compressed length, 21.88 in. extended length, with E2(12X38) lower mount and E1 upper mount. Confirm rear fitment on the specific Ford F-350 Super Duty model year before replacement. The included dust cover helps protect the shaft during service, and the shock is designed to work with electronic stability and braking systems already on the vehicle.

Quality Assurance

KYB is known for suspension components used in demanding OE and aftermarket applications, and the MonoMax line is built around durability, control, and consistent damping for truck use. Part number 565122 is manufactured as a heavy-duty monotube shock absorber for rear suspension service on the Ford F-350 Super Duty.