KYB 5640008 Suspension Strut - Front

KYB MonoMax Front Leveling Strut

The KYB MonoMax 5640008 is a front suspension strut for truck and SUV applications that need added control and a leveled stance. Its extended-length body raises the front end without requiring an additional spacer, while the higher spring seat supports the leveling function.

Key Features

• Front leveling strut for select Chevrolet, GMC, and Cadillac truck-based platforms
• Extended-length body helps raise the front end for a level appearance
• Heavy-duty monotube construction for consistent damping response
• Large-bore design supports heavier, higher center-of-gravity vehicles
• Fade-resistant performance under towing, hauling, and off-road use
• Zinc-coated steel piston ring for work-ready durability
• Part number 5640008

Product Details

Built for trucks that work hard, the KYB MonoMax line focuses on control, stability, and durability in demanding suspension conditions. This front strut uses a monotube design that reacts quickly to changing road inputs and maintains performance under load. The longer body and higher spring seat provide the leveling effect directly through the strut design, making it a practical choice for owners seeking a front-end lift without adding a spacer. The KYB MonoMax 5640008 is a strong fit for Chevrolet Silverado 1500 and GMC Sierra 1500 front suspension service, as well as select Chevrolet Tahoe, Suburban 1500, Avalanche, and GMC Yukon/Yukon XL 1500 applications.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Front-end sag on leveled truck and SUV setups
• Excess body motion during towing or hauling
• Reduced stability on rough roads or off-road surfaces
• Inconsistent damping from worn front struts
• Loss of control on heavier, higher-riding vehicles

Installation Notes

Fits 2007-2014 Chevrolet Suburban 1500, front, leveling strut (except electronic and Premium Smooth Ride suspensions); Fits 2007-2014 Chevrolet Tahoe, front, leveling strut (except electronic, ZW7 Premium Smooth Ride suspension and without police package); Fits 2007-2014 GMC Yukon, front, leveling strut (except electronic, ZW7 Premium Smooth Ride suspension and without police package); Fits 2011-2014 GMC Yukon XL 1500, front, leveling strut (except electronic and Premium Smooth Ride suspension); Fits 2007-2013 Chevrolet Avalanche, front, leveling strut (except electronic and Premium Smooth Ride suspensions); Fits 2007-2013 Chevrolet Silverado 1500, front, leveling strut (except electronic suspension); Fits 2007-2013 GMC Sierra 1500, front, leveling strut (except electronic suspension); Fits 2007-2010 GMC Yukon XL 1500, front, leveling strut (except electronic and Premium Smooth Ride suspensions).

Verify suspension package, electronic damping, and trim-specific exclusions before installation. Compressed length is 13.54 in., extended length is 17.52 in., and stroke length is 3.98 in. Upper mount type is S1 (10MM) and lower mount type is E3 (100x128x10).

Quality Assurance

KYB designs the MonoMax line for truck-duty suspension service with a focus on control, durability, and fade-free performance under load. Part number 5640008 is built for front-end applications where leveling and stability matter.