KYB 565066 Shock Absorber - Front

KYB MonoMax Front Shock for Silverado and Sierra

The KYB MonoMax 565066 is a heavy-duty front shock absorber built for truck owners who need firmer control under load. It is a monotube design made for Chevrolet Silverado 1500 and GMC Sierra 1500 applications, including 1999-2007 Silverado 1500 Classic and Sierra 1500 Classic front suspension setups.

Key Features

• Monotube shock design for consistent damping and improved control
• Up to 40% more damping performance than standard shock absorbers
• Zinc-coated stainless steel piston ring for sealing in demanding conditions
• Rubber dust boot helps keep dirt and debris away from the shaft and seals
• Engineered to work with vehicles equipped with electronic safety systems such as ESC and ABS
• Front application for GM truck suspension upgrade use

Product Details

KYB MonoMax 565066 is part of the MonoMax line, a KYB truck-focused shock absorber series built for heavier-duty use. This line is aimed at trucks that tow, haul, or see off-road service, where stable damping and fade resistance matter more than soft ride tuning. With a compressed length of 9.84 inches, extended length of 14.33 inches, and 4.49 inches of stroke, this shock is sized for the listed front applications on Chevrolet Silverado 1500 and GMC Sierra 1500 models. The lower mount type is E3(51.6X87X14) and the upper mount type is S1.

This part cross-references Monroe Shocks & Struts 911503 for the same application.

Common Problems It Can Help Address

• Excessive front-end bounce on GM trucks
• Reduced control when towing or hauling heavy loads
• Suspension fade during repeated rough-road use
• Loose or unsettled handling on higher center-of-gravity trucks
• Dust and debris exposure around the shock shaft and seals

Installation Notes and Fitment

Compatible With 1999-2007 Chevrolet Silverado 1500 and GMC Sierra 1500 front suspension applications listed below. Verify electronic suspension, Quadrasteer, and HD exclusions before ordering.

• Fits 2007 Chevrolet Silverado 1500 Classic, front; Maximum Monotube Performance Upgrade; (Exc. Electronic Suspension and Quadrasteer); MonoMax
• Fits 2007 GMC Sierra 1500 Classic, front; Maximum Monotube Performance Upgrade; (Exc. Electronic Suspension); MonoMax
• Fits 2004-2006 Chevrolet Silverado 1500, front; Maximum Monotube Performance Upgrade; (Exc. Electronic Suspension and Quadrasteer); MonoMax
• Fits 2004-2006 GMC Sierra 1500, front; Maximum Monotube Performance Upgrade; (Except Electronic Suspension and Quadrasteer); MonoMax
• Fits 2001-2003 Chevrolet Silverado 1500, front; Maximum Monotube Performance Upgrade; (Exc. HD, Electronic Suspension and Quadrasteer); MonoMax
• Fits 2001-2003 GMC Sierra 1500, front; Maximum Monotube Performance Upgrade; (Exc. Electronic Suspension and Quadrasteer); MonoMax
• Fits 1999-2000 Chevrolet Silverado 1500, front; Maximum Monotube Performance Upgrade; (Except Electronic Suspension and Quadrasteer); MonoMax
• Fits 1999-2000 GMC Sierra 1500, front; Maximum Monotube Performance Upgrade; (Exc. Electronic Suspension & Quadrasteer); MonoMax

Use the listed mount types and dimensions to confirm suspension match before installation. Part number 565066 is the correct reference for this front shock application.

Quality Assurance

KYB is known for suspension components used in demanding truck applications, and the MonoMax line is built around durability, stable damping, and fade-resistant performance. The zinc-coated piston ring and protective dust boot support long-term service in harsh driving conditions.