Bilstein 25-329858 Suspension Shock Absorber - Rear

Bilstein B8 5160 Shock Absorber for Jeep Wrangler

The Bilstein B8 5160 shock absorber (part number 25-329858) is engineered for Jeep Wrangler owners seeking reliable suspension performance. Designed specifically for light trucks, this monotube shock absorber offers consistent damping and durability for off-road and on-road conditions.

• Non-adjustable damping for consistent ride quality
• Monotube internal design for improved heat dissipation
• Billet reservoir clamp included for secure reservoir mounting
• Eye-type upper and lower mounts (12.8mm) for direct fitment
• Zinc plated finish to resist corrosion
• Collapsed length: 17.40 inches (442 mm); Extended length: 29.38 inches (746.2 mm)
• Stroke length of 11.98 inches (304.3 mm) for enhanced wheel travel
• 46mm piston diameter and 14mm shaft diameter for durability
• Smooth body design (non-coilover) for compatibility with Jeep Wrangler suspension setups

About the Bilstein B8 5160 Series

The B8 5160 series from Bilstein is tailored for light trucks and SUVs requiring a monotube shock with an external reservoir. This design improves heat management and maintains consistent damping performance during extended off-road use. The inclusion of a billet reservoir clamp ensures secure installation of the remote reservoir, which helps optimize shock function under demanding conditions. The B8 5160 line is a solid choice for Jeep Wrangler owners looking to upgrade their suspension with a durable and reliable shock absorber.

Product Details and Specifications

This Bilstein shock absorber features a monotube internal design that enhances heat dissipation and maintains consistent damping performance. The shock is non-adjustable, providing a fixed damping rate optimized for Jeep Wrangler applications. Both upper and lower mounts use 12.8mm eyelets, ensuring direct compatibility with factory mounting points. The zinc plated finish offers corrosion resistance, extending the service life of the shock. With a collapsed length of 17.40 inches and an extended length of 29.38 inches, this shock provides a stroke length of nearly 12 inches, allowing for improved wheel articulation and ride comfort.

Common Suspension Issues Addressed

• Reduced ride quality due to worn or factory shocks
• Excessive body roll and poor handling on rough terrain
• Overheating and fade during extended off-road use
• Insufficient wheel travel limiting off-road capability
• Corrosion and premature wear in harsh environments

Installation Notes and Tips

Installation of the Bilstein B8 5160 shock absorber (25-329858) is straightforward for Jeep Wrangler models equipped with compatible eye mounts. Ensure the mounting points are clean and free of debris before installation. The included billet reservoir clamp should be used to securely mount the remote reservoir to the vehicle frame or suspension components. Since this shock is non-adjustable, no tuning is required after installation. It is recommended to inspect all suspension components during installation to ensure optimal performance.

Quality Assurance and Warranty

Bilstein manufactures this shock absorber to meet strict quality standards, using durable materials and precision engineering. The zinc plated finish protects against corrosion, contributing to long-term reliability. While specific warranty details are not provided here, Bilstein typically offers a limited warranty on their shock absorbers covering defects in materials and workmanship. Consult Bilstein or authorized distributors for exact warranty terms related to part number 25-329858.