KYB 5640003 Suspension Strut - Front

KYB MonoMax Front Strut for F-150

The KYB MonoMax 5640003 is a heavy-duty front suspension strut built for Ford F-150 trucks that work hard and carry demanding loads. It uses a monotube design to maintain consistent control and stability in changing road conditions.

Compatible with 2014 Ford F-150 front and 2015-2020 Ford F-150 front, this KYB MonoMax front strut is a direct-fit option for trucks used for towing, hauling, and off-road driving.

Key Features

• Heavy-duty monotube construction for stable damping response
• Large-bore design for added control on heavier trucks
• Fade-resistant performance under repeated suspension movement
• Zinc-coated steel piston ring for work-focused durability
• Includes an off-road dust boot
• Front suspension strut application for Ford F-150

MonoMax Product Line

KYB MonoMax is the brand’s truck-focused shock and strut line for vehicles that see demanding use. The line is built around firmer control, consistent response, and durability for towing, hauling, and rough-road conditions.

Detailed Description

KYB part number 5640003 is engineered for the front suspension on select Ford F-150 models. It measures 17.2 inches compressed, 21.81 inches extended, and provides 4.61 inches of stroke length. Mounting details include a lower E3 mount (88.75x117x13) and an upper S1 mount (12MM), which helps match the original suspension layout on the listed applications. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

For drivers searching for a Ford F-150 front strut, KYB 5640003 offers a truck-specific suspension solution for 2014 Ford F-150 front and 2015-2020 Ford F-150 front models without the Heavy Duty Suspension or Heavy Duty Payload Package.

What It Helps Address

• Excessive front-end bounce on loaded or work-use trucks
• Reduced steering control over uneven pavement
• Suspension fade during repeated towing or hauling cycles
• Front-end instability on rough roads or off-road surfaces
• Wear-related ride inconsistency in the front suspension

Installation Notes

Verify the vehicle’s suspension package before ordering. This part fits 2014 Ford F-150 front without Heavy Duty Suspension and 2015-2020 Ford F-150 front without Heavy Duty Payload Package. Confirm the lower and upper mount types match the original strut before installation. Professional installation and a post-installation alignment are recommended after front strut replacement.

Quality Assurance

KYB builds the MonoMax line for demanding truck use with a monotube design, zinc-coated steel piston ring, and fade-resistant operation. Part number 5640003 is intended for the listed Ford F-150 applications and follows KYB’s truck-focused suspension construction standards.