Bilstein 25-325096 Suspension Shock Absorber - Rear Right

Bilstein B8 5160 Remote Reservoir Shock

The Bilstein B8 5160, part number 25-325096, is a direct-fit rear right shock absorber for lifted trucks and SUVs that need more control on rough terrain. It is built for 2010-2024 Toyota 4Runner, 2014-2023 Lexus GX460, and 2007-2014 Toyota FJ Cruiser applications with the listed rear lift and suspension requirements.

The B8 5160 line is Bilstein’s remote reservoir shock series for light truck use, combining application-specific valving with added cooling capacity and wheel travel. For buyers searching for a rear right shock for a lifted Toyota 4Runner or Lexus GX460, the 25-325096 offers a clean fit with performance-focused hardware.

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 operation
• 46mm piston and 14mm shaft for light truck suspension use
• Zinc-plated finish for corrosion resistance
• Black bellows boot included
• Billet reservoir clamp included where applicable
• Lower eye mount with 19.25mm bushing eye and upper stem mount

Detailed Description

Bilstein B8 5160 remote reservoir shock absorbers are engineered for lifted suspension setups that see demanding street and off-road use. The separate reservoir helps manage heat buildup, while the monotube construction supports stable damping performance over repeated compression cycles. This rear right shock absorber uses a smooth-body design and application-specific digressive valving to match the vehicle’s suspension needs without requiring adjustment.

Part number 25-325096 is listed for the rear right position on 2010-2024 Toyota 4Runner with 0-2 inch rear lift, 2014-2023 Lexus GX460 with 0-2 inch rear lift, and 2007-2014 Toyota FJ Cruiser with 0-2 inch rear lift. It also fits 2010-2013 Lexus GX460 and 2003-2009 Lexus GX470 with rear coil spring conversion, plus 2003-2009 Toyota 4Runner without X-REAS suspension. This part cross-references Monroe Shocks & Struts 56505R for the same application.

What It Helps Address

• Excess shock fade during extended off-road driving
• Reduced rear suspension control on lifted Toyota 4Runner, Lexus GX460, and Toyota FJ Cruiser setups
• Heat buildup from repeated compression and rebound cycles
• Loss of wheel travel in demanding terrain
• Need for a direct-fit rear right replacement shock with reservoir cooling

Installation Notes and Tips

Verify rear lift height, suspension configuration, and mounting style before installation. This shock is listed for rear right applications only, and some fitments require a rear coil spring conversion or exclusion of X-REAS suspension. Confirm that the vehicle matches the exact year, make, model, and notes shown for the application before ordering. Part number 25-325096 is also referenced as Bilstein B8 5160 for fitment lookup.

Quality Assurance

Bilstein B8 5160 shocks are built around a monotube design and application-specific valving for consistent suspension control in light truck use. The remote reservoir, billet reservoir clamp where applicable, and zinc-plated finish support durability in harsh driving conditions.