KYB 565133 Shock Absorber - Rear

KYB MonoMax Rear Shock for Tundra

The KYB MonoMax 565133 is a heavy-duty rear suspension shock absorber built for Toyota Tundra trucks that carry loads, tow trailers, or see off-road use. Its monotube design is tuned for stable control and fade-resistant performance under demanding conditions.

Key Features

• Up to 40% more damping performance than standard shock absorbers
• Monotube truck shock design for improved handling and control
• Zinc-coated stainless steel piston ring for sealing in extreme conditions
• Rubber dust boot helps protect the shaft and seal area from dirt and debris
• Engineered to work with vehicles equipped with electronic safety systems such as ESC and ABS
• Rear fitment for 2007-2021 Toyota Tundra applications

Product Details

KYB MonoMax is the brand’s heavy-duty shock line for trucks and other high-demand vehicles. The MonoMax 565133 uses a large-bore monotube construction to help maintain consistent damping when the vehicle is towing, hauling, or traveling over uneven terrain. For Toyota Tundra owners looking for a rear shock absorber upgrade, this part is built to improve body control without sacrificing durability. This part cross-references Toyota OE numbers 4853009M80 and 4853009N10 for the same application.

Common Problems It Helps Address

• Excessive rear bounce after bumps or dips
• Reduced stability when towing a trailer
• Rear-end sag and poor control under heavy cargo
• Shock fade during repeated rough-road use
• Loose handling on work trucks and off-road setups

Installation Notes and Tips

Fits 2007-2021 Toyota Tundra, rear. Verify compressed length, extended length, and mount types before installation: compressed length 15.23 in, extended length 23.97 in, stroke length 9.74 in, lower mount E2 (12.4x40), upper mount S1 (12 mm). The included dust cover helps protect the shaft during service, and the shock is intended for rear suspension replacement on the listed Tundra applications. Part number 565133 should be matched to the vehicle’s rear position and suspension configuration before installation.

Quality Assurance

KYB is a recognized suspension manufacturer with a strong reputation in OE and aftermarket shock absorber engineering. The MonoMax line is built for demanding truck use, with a zinc-coated piston ring and monotube construction selected for durability and consistent damping performance.