Bilstein 25-311280 Suspension Shock Absorber - Rear

Bilstein B8 5160 Rear Shock for Lifted F-150

The Bilstein B8 5160 remote reservoir shock absorber is a direct-fit rear suspension upgrade for lifted trucks and SUVs. Built for 2009-2013 Ford F-150 rear applications with 0-1" rear lift, part number 25-311280 adds cooling capacity and suspension control for demanding street and off-road use.

Key Features

• Remote reservoir design for increased cooling capacity and added wheel travel
• Monotube internal design for consistent, fade-resistant damping
• Velocity-sensitive digressive valving tuned for the specific application
• Non-adjustable damping for straightforward setup
• 46mm piston and 14mm shaft for durable shock control
• Eye 12mm upper and lower mounts for direct-fit installation
• Zinc-plated finish for corrosion resistance
• Billet reservoir clamp included where applicable

Product Line Details

Bilstein B8 5160 shocks are part of Bilstein’s lifted-truck suspension lineup. This series uses a remote reservoir layout to help manage heat buildup during repeated compression and rebound cycles, which is important on a Ford F-150 used on rough roads, trails, or loaded driving conditions. The B8 5160 line focuses on controlled damping and clean packaging with a low-profile reservoir installation.

Detailed Description

Bilstein 25-311280 is engineered for the rear of 2009-2013 Ford F-150 models with 0-1" rear lift. The smooth-body, non-coilover shock uses a monotube design and a 46mm piston to maintain stable damping response, while the remote reservoir helps increase fluid capacity and reduce fade under repeated use. The 11.59" stroke and 28.93" extended length support suspension movement in lifted rear setups without sacrificing control.

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

What It Helps Address

• Excessive shock fade during repeated off-road or rough-road driving
• Reduced rear suspension control on lifted Ford F-150 setups
• Heat buildup in standard shock absorbers
• Harsh rebound and inconsistent damping response
• Loss of wheel travel in rear suspension applications

Installation Notes and Tips

Compatible With 2009-2013 Ford F-150, rear. Verify that the vehicle has 0-1" rear lift before installation. Confirm upper and lower eye mount dimensions, shock length, and available clearance for the remote reservoir and hose routing. Use the correct torque specifications for the mounting hardware and inspect surrounding suspension components before replacing the shock.

Quality Assurance

Bilstein designs the B8 5160 series with a monotube construction, application-specific valving, and a remote reservoir layout to support consistent damping performance in lifted truck use. Part number 25-311280 is built for direct-fit rear suspension service on the specified Ford F-150 applications.