KYB 5640007 Suspension Strut - Front

KYB MonoMax Front Leveling Strut for F-150

The KYB MonoMax 5640007 is a front suspension strut for select Ford F-150 trucks that need a level stance without adding a spacer. Its extended-length body and higher spring seat help raise the front end while maintaining the control and stability expected from a heavy-duty monotube design.

Built for trucks that tow, haul, or see off-road use, the MonoMax line focuses on fade-free performance and consistent handling under load. For 2014-2020 Ford F-150 front applications, part number 5640007 provides a direct-fit leveling strut solution for specific non-heavy-duty configurations.

MonoMax Heavy-Duty Truck Design

• KYB MonoMax heavy-duty monotube construction for truck use
• Extended-length body with a higher spring seat to level the front end
• No additional spacer required for the leveling application
• Large-bore design for added stability on higher center of gravity vehicles
• Work-ready zinc-coated steel piston ring
• Front suspension strut for select Ford F-150 models
• Part number 5640007

Detailed Product Overview

KYB MonoMax 5640007 is engineered for the front of select Ford F-150 trucks from 2014 through 2020. It uses an extended body and elevated spring seat to create a leveled front appearance while preserving suspension control. The monotube layout is suited to heavier-duty truck service, and the design automatically responds to changing road conditions for consistent damping. This part number 5640007 is a practical choice for F-150 owners who need a front leveling strut for towing, hauling, or mixed on-road and off-road driving.

Compatible With 2017-2020 Ford F-150, front; 2015-2016 Ford F-150, front; and 2014 Ford F-150, front. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Strut Can Address

• Front-end rake on select Ford F-150 trucks
• Reduced control when carrying heavier loads
• Suspension fade during repeated truck duty cycles
• Less stable handling on rough roads or off-road terrain
• Need for a leveling strut without adding a spacer

Installation Notes and Fitment Tips

Fits 2017-2020 Ford F-150, front, leveling strut - w/o Heavy Duty Payload; MonoMax. Fits 2015-2016 Ford F-150, front, leveling strut w/o Heavy Duty Package; MonoMax. Fits 2014 Ford F-150, front, leveling strut (w/o Heavy Duty Suspension); MonoMax.

Verify the truck’s suspension package before ordering, since heavy-duty payload, heavy-duty package, and heavy-duty suspension configurations are excluded from the listed fitments. Confirm compressed length of 18.19 in., extended length of 22.79 in., stroke length of 4.6 in., lower mount type E3(88.75x117x0), and upper mount type S1(12MM) against the original strut before installation.

Quality Assurance

KYB is known for suspension components used in demanding truck applications, and the MonoMax line is built around durability, load control, and consistent damping for work-oriented use. Part number 5640007 follows the listed OE-style fitment for select Ford F-150 front leveling applications.