Bilstein 25-311259 Suspension Shock Absorber - Rear

Bilstein B8 5160 Rear Shock for Tacoma

The Bilstein B8 5160 remote reservoir shock absorber is built for lifted Toyota Tacoma rear suspension setups that need more control on rough terrain. Part number 25-311259 combines a monotube design, digressive valving, and added cooling capacity to support consistent damping on the street and off-road.

Key Features

• Remote reservoir design increases cooling capacity and wheel travel
• Monotube internal design for consistent fade-resistant performance
• Velocity-sensitive digressive valving tuned for the application
• Zinc-plated finish for added corrosion resistance
• 46mm piston and 14mm shaft for durable shock control
• Billet reservoir clamp included where applicable
• 360-degree swivel banjo hose fitting for cleaner routing
• Direct-fit rear shock absorber for lifted light trucks

Product Details

Bilstein’s B8 5160 line is focused on lifted truck and SUV suspension applications that need improved heat management and stable damping under repeated load. This rear shock absorber uses a smooth-body monotube layout with a remote reservoir to help maintain performance during extended off-road use. The 25-311259 is engineered for 2005-2023 Toyota Tacoma rear applications with 0-1.5 inches of rear lift, making it a fitment-specific solution for owners looking to restore control after suspension changes.

Compatible With 2005-2023 Toyota Tacoma, rear. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Shock Can Address

• Excessive rear bounce after a lift kit installation
• Reduced damping control on washboard roads and uneven trails
• Heat-related shock fade during repeated off-road driving
• Loose or unsettled rear suspension feel under load
• Loss of wheel travel compared with a standard shock setup

Installation Notes and Tips

Verify rear lift height before ordering, since this shock is listed for Tacoma models with 0-1.5 inches of rear lift. Confirm upper stem and lower eye 12mm mounting points, along with the collapsed and extended lengths, before installation. The remote reservoir layout also requires careful hose routing and reservoir placement for proper clearance.

Quality Assurance

Bilstein B8 5160 shocks are built with a monotube internal design, zinc-plated finish, and application-specific valving to support consistent performance in demanding use. Part number 25-311259 is part of Bilstein’s B8 5160 series for lifted truck suspension applications.