Bilstein 25-311297 Suspension Shock Absorber - Rear

Bilstein B8 5160 Rear Shock for Lifted Trucks

The Bilstein B8 5160 remote reservoir shock absorber is built for rear suspension upgrades on lifted Chevrolet Silverado 1500 and GMC Sierra 1500 applications. Part number 25-311297 combines a monotube design, digressive valving, and added reservoir capacity to support consistent damping on rough roads and off-road terrain.

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
• Non-adjustable damping for straightforward setup
• Billet reservoir clamp included for a clean installation
• 360-degree swivel banjo hose fitting for routing flexibility
• Zinc-plated finish for added corrosion resistance
• Eye-to-eye 14.4 mm upper and lower mounts

Product Details

Bilstein’s B8 5160 line is aimed at lifted light trucks and SUVs that need more control than a standard shock can provide. This rear shock absorber uses a smooth-body, non-coilover layout with a 46 mm piston, 14 mm shaft, and 10.21 inches of stroke to help maintain suspension control through repeated compression and rebound cycles. The remote reservoir helps manage heat buildup, which is important when driving a Chevrolet Silverado 1500 or GMC Sierra 1500 on uneven pavement, towing, or spending time off-road. Part number 25-311297 is a direct-fit rear shock for select 1999-2019 Silverado and Sierra 1500 applications, including 0-2 inch rear lift setups where specified.

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

What This Shock Absorber Helps Address

• Excessive rear-end bounce after bumps or dips
• Heat-related damping fade during extended rough-road use
• Reduced rear suspension control on lifted trucks
• Unstable ride quality when the truck is loaded or driven off pavement
• Need for a direct-fit rear shock upgrade on compatible Silverado 1500 and Sierra 1500 models

Installation Notes and Fitment

Compatible With rear applications only. Fits 2019 Chevrolet Silverado 1500 LD, rear; Fits 2019 GMC Sierra 1500 Limited, rear; Fits 2007-2018 Chevrolet Silverado 1500, rear; Fits 2007-2018 GMC Sierra 1500, rear; Fits 2007 Chevrolet Silverado 1500 Classic, rear; Fits 2007 GMC Sierra 1500 Classic, rear; Fits 2006 Chevrolet Silverado 1500, rear; Fits 2006 GMC Sierra 1500, rear; Fits 2002-2005 Chevrolet Silverado 1500, rear; Fits 2002-2005 GMC Sierra 1500, rear; Fits 1999-2001 Chevrolet Silverado 1500, rear; Fits 1999-2001 GMC Sierra 1500, rear. Notes vary by application: some 2007-2018 models require 0-2 inch rear lift, some 2007 and 2006 applications require no ZX3 electronic suspension package, and 2002-2005 applications require no Quadrasteer.

Before installation, verify collapsed length, extended length, and mount style against the vehicle’s rear suspension. Confirm lift height and factory equipment, especially on Silverado 1500 LD and Sierra 1500 Limited models that share the 2014-2018 body style.

Quality Assurance

Bilstein B8 5160 shocks are engineered with a monotube construction and application-specific valving to support consistent performance in demanding truck use. The zinc-plated finish, remote reservoir hardware, and billet reservoir clamp contribute to a durable, low-profile setup for rear suspension service.