Bilstein 25-329971 Suspension Shock Absorber - Rear

Bilstein B8 5160 Suspension Shock Absorber Overview

The Bilstein B8 5160 shock absorber (part number 25-329971) is engineered for light trucks requiring durable and reliable suspension components. Designed with a monotube internal structure and a smooth body, this shock absorber delivers consistent performance for vehicles such as Ford F-150, Chevrolet Silverado, and RAM 1500 models.

• Non-adjustable damping for consistent ride quality
• Monotube internal design for improved heat dissipation
• Billet reservoir clamp included for secure reservoir mounting
• Black bellows boot included to protect the shaft
• Zinc plated finish for corrosion resistance
• Eye-type upper and lower mounts (14.1mm) for direct fitment
• Stroke length of 11.58 inches (294.1 mm) for extended travel
• Collapsed length of 16.83 inches (427.5 mm) and extended length of 28.41 inches (721.7 mm)
• 46mm piston diameter and 14mm shaft diameter for durability

About the Bilstein B8 5160 Product Line

The B8 5160 series from Bilstein is designed specifically for light trucks and off-road applications. This product line features monotube shocks with remote reservoirs to provide enhanced oil capacity and cooling, which helps maintain consistent damping performance under demanding conditions. The 25-329971 shock absorber is part of this series, offering a smooth body design that is not coilover compatible but optimized for vehicles requiring extended suspension travel and robust construction.

Detailed Product Description

The Bilstein 25-329971 shock absorber features a monotube internal design that improves heat dissipation and reduces fade during prolonged use. Its non-adjustable damping system ensures reliable and consistent shock absorption without the need for manual tuning. The included billet reservoir clamp secures the remote reservoir, enhancing durability and performance. The black bellows boot protects the shaft from dirt and debris, extending the service life of the shock. With zinc plating on the body, this shock absorber resists corrosion, making it suitable for harsh environments. Eye-type mounts on both ends provide straightforward installation on compatible light truck models.

Common Applications and Problem Solving

• Improves ride stability and control on lifted Ford F-150 trucks
• Reduces shock fade during off-road driving in Chevrolet Silverado
• Enhances suspension travel and damping consistency on RAM 1500
• Protects suspension components from premature wear due to rough terrain
• Maintains vehicle handling and comfort under heavy load conditions

Installation Notes and Tips

Ensure compatibility with your specific make and model before installation. The Bilstein 25-329971 shock absorber uses eye-type mounts with a 14.1mm diameter on both upper and lower ends, so verify mounting points accordingly. The shock is non-adjustable and designed for direct replacement or upgrade in light truck suspension systems. Properly secure the billet reservoir clamp to avoid movement during operation. It is recommended to inspect related suspension components during installation for optimal performance.

Quality Assurance and Warranty

Bilstein shock absorbers are manufactured to meet strict quality standards, featuring durable materials and precision engineering. The 25-329971 part is zinc plated to resist corrosion and includes protective boots to extend service life. While specific warranty details are not provided here, Bilstein typically offers limited warranties on their suspension products. Consult the manufacturer or authorized distributor for exact warranty terms related to this shock absorber.