KYB 565040 Shock Absorber - Rear

KYB MonoMax Rear Shock Absorber 565040

The KYB MonoMax 565040 is a heavy-duty rear shock absorber built for trucks and SUVs that carry weight, tow, or see rough road use. Its monotube design and large-bore construction are aimed at improving control and stability on vehicles like the Dodge Dakota, Ram Dakota, Mitsubishi Raider, and Dodge Durango.

Key Features

• Heavy-duty monotube shock absorber for rear suspension applications
• Up to 40% more damping performance than standard shock absorbers
• Zinc-coated stainless steel piston ring for a positive seal in demanding conditions
• Off-road dust boot helps protect the shaft and seal area from dirt and debris
• Engineered to work with electronic safety systems such as ESC and ABS
• Compressed length: 14.53 in; extended length: 22.56 in; stroke length: 8.03 in
• Upper and lower mount type: E2 (12x42)

Product Details

KYB MonoMax is the brand’s truck-focused shock line, developed for heavier vehicles that need firmer damping and consistent response under load. This KYB 565040 rear shock absorber uses a monotube layout to separate gas and oil more effectively than many standard twin-tube designs, helping maintain fade-resistant performance during towing, hauling, and off-road driving. It is a direct-fit suspension shock absorber for rear applications on 1997-2011 Dodge Dakota, 2011 Ram Dakota, 2008-2009 Mitsubishi Raider, and 1999-2003 Dodge Durango rear suspension setups. This part cross-references Monroe Shocks & Struts (e.g., 911138) for the same application.

Common Problems This Part Addresses

• Excessive rear-end bounce after bumps or dips
• Reduced stability when towing a trailer or carrying cargo
• Harsh or inconsistent damping on rough pavement and off-road surfaces
• Suspension fade during extended heavy-duty use
• Loss of control feel in trucks with a higher center of gravity

Installation Notes

Verify rear fitment by year, make, and model before installation. This KYB MonoMax 565040 uses E2 (12x42) upper and lower mounts, so confirm the mounting style and compressed/extended length against the original shock. Inspect related suspension components, mounting hardware condition, and bushings before installation to ensure proper operation after replacement.

Quality Assurance

KYB builds the MonoMax line for demanding truck and SUV service, with a zinc-coated piston ring and dust boot included for added durability in harsh environments. The design is intended to maintain consistent damping performance under load and in off-road conditions.