Bilstein 25-325089 Suspension Shock Absorber - Rear

Bilstein B8 5160 Rear Shock for Ram

The Bilstein B8 5160 remote reservoir shock absorber is built for lifted Ram 1500 and Ram 1500 Classic rear suspension setups. Part number 25-325089 combines a monotube design, digressive valving, and added reservoir capacity to support consistent damping and improved heat management on rough roads and off-road terrain.

Key Features

• Remote reservoir design for increased cooling capacity and added wheel travel
• Monotube internal design for consistent, fade-resistant performance
• Velocity-sensitive digressive valving tuned for the specific application
• Non-adjustable damping for straightforward setup
• Zinc-plated finish for added corrosion resistance
• 46mm piston with 14mm shaft for light truck use
• Billet reservoir clamp included
• Unique 360-degree swivel banjo hose fitting for cleaner routing
• Eye 14.1mm upper and lower mounts

Product Details

Bilstein B8 5160 shocks are part of the B8 5160 line, a remote reservoir series developed for lifted trucks and SUVs that need more control than a standard shock absorber can provide. This rear shock absorber uses a smooth-body monotube construction and a separate reservoir to help manage heat during repeated compression and rebound cycles. Part number 25-325089 is a direct-fit rear shock for select Ram applications and is engineered for stable performance in demanding driving conditions.

Compatible With 2023-2024 Ram 1500 Classic rear, 2019-2022 Ram 1500 Classic rear, 2013-2018 Ram 1500 rear, 2011-2012 Ram 1500 rear, 2010 Dodge Ram 1500 rear, and 2009 Dodge Ram 1500 rear. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Uses

• Rear shock replacement on lifted Ram 1500 and Ram 1500 Classic trucks
• Restoring damping control after worn or leaking factory shocks
• Reducing fade during repeated off-road or heavy-load suspension movement
• Improving rear suspension control on trucks with 1-2.5 inch rear lift setups
• Addressing excessive bounce, harsh rebound, or unstable rear ride behavior

Installation Notes

Verify rear fitment by model year and suspension configuration before installation. This shock is for rear position only and is listed for vehicles without air suspension on 2013-2022 Ram 1500 Classic and Ram 1500 applications, with lift-specific fitment noted for 2009-2012 and 2023-2024 models. Confirm upper and lower eye mount dimensions, collapsed length, extended length, and stroke length against the vehicle’s suspension travel requirements.

Quality Assurance

Bilstein B8 5160 shocks are built with a monotube internal design, zinc-plated finish, and application-specific digressive valving to support durable, repeatable performance in truck and SUV suspension use. The remote reservoir layout, billet reservoir clamp, and swivel banjo fitting are designed to support a clean installation and reliable operation in harsh conditions.