Rancho RS9000XL Front Shock Absorber

The Rancho RS9000XL RS999380 is a front suspension shock absorber built for drivers who want adjustable ride control for street use, towing, and off-road driving. It is part of the RS9000XL line, known for nine-position manual adjustment so you can tune damping to match changing load and terrain conditions.

Compatible With 2011-2019 Chevrolet Silverado 2500 HD front and 2011-2019 GMC Sierra 2500 HD front, plus 2011-2018 Chevrolet Silverado 3500 HD front and 2011-2018 GMC Sierra 3500 HD front with a 4-inch front raised height suspension setup.

Key Features

• Part number RS999380 for front suspension applications
• Nine-position manually adjustable ride control
• Built for on-road driving, towing, and off-road use
• Extended length: 23 inches
• Compressed length: 16.56 inches
• Travel length: 6.29 inches
• Reserve tube diameter: 2.13 inches
• Dust shield included for added protection
• Upper mount: XP15
• Lower mount: clevis bracket mount

RS9000XL Product Line Details

The Rancho RS9000XL line is designed around manual damping adjustment, giving you control over how the shock responds to changing vehicle load and driving conditions. That makes the RS999380 a practical choice for lifted heavy-duty trucks that see a mix of daily driving, towing, and trail use. If you are shopping for Rancho RS999380 shocks for a Silverado 2500 HD or Sierra 3500 HD, this series provides a direct way to tune front suspension response without changing the shock absorber itself.

What This Shock Absorber Helps Address

• Excessive front-end bounce over rough pavement
• Reduced control when towing or carrying added front-end load
• Harsh or inconsistent ride feel after suspension height changes
• Front suspension instability on uneven roads or off-road surfaces
• Need for adjustable damping on a lifted heavy-duty truck

Installation Notes and Fitment Tips

Install the RS999380 on the front of the listed Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD, Chevrolet Silverado 3500 HD, and GMC Sierra 3500 HD applications only when the vehicle has a 4-inch front raised height suspension system. Confirm upper mount XP15 and lower clevis bracket mount details before installation, and verify compressed and extended lengths against the suspension travel on the truck. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Rancho manufactures the RS9000XL series for adjustable suspension control in demanding truck applications. The RS999380 is built to match the specified fitment and mounting configuration for the listed Chevrolet and GMC heavy-duty models.