Bilstein 25-305258 Suspension Shock Absorber - Rear Left

Bilstein B8 8100 (Bypass) Shock Absorber Overview

The Bilstein B8 8100 (Bypass) suspension shock absorber, part number 25-305258, is engineered for drivers seeking precise control over their vehicle's damping characteristics. Designed with a monotube internal structure and a bypass body, this shock absorber offers adjustable compression and rebound settings to tailor ride quality and handling.

• Double adjustable damping for compression and rebound
• Bypass body design (non-coilover) with 60mm internal diameter
• Monotube internal design for consistent performance
• Includes remote reservoir for improved heat dissipation
• Zinc plated finish for corrosion resistance
• Eye-type upper and lower mounts, 14.1mm diameter
• Collapsed length: 17.98 inches (456.7 mm)
• Extended length: 29.33 inches (745.0 mm)

Detailed Features of the B8 8100 (Bypass) Shock Absorber

The Bilstein B8 8100 (Bypass) series is specifically designed to provide enhanced suspension tuning through its double adjustable damping system, allowing independent adjustment of compression and rebound forces. This feature enables drivers to fine-tune their vehicle’s suspension response for various driving conditions. The bypass body design, distinct from coilover shocks, offers a robust 60mm internal diameter monotube construction that improves durability and heat management. The inclusion of a remote reservoir further aids in maintaining consistent damping performance during extended use. Both upper and lower mounts utilize 14.1mm eyelets, ensuring secure and precise fitment. The zinc plated finish adds a layer of corrosion protection, extending the service life of the shock absorber.

About the Bilstein B8 8100 (Bypass) Product Line

The B8 8100 (Bypass) product line from Bilstein focuses on providing adjustable bypass shocks that cater to drivers who require customizable suspension setups without the use of coilovers. This line is engineered to deliver improved handling and ride comfort by allowing separate tuning of compression and rebound damping. The design is suitable for a range of vehicles where enhanced suspension control is desired, making it a versatile choice for performance upgrades or replacement shocks.

Applications and Problem Solving

• Improves vehicle handling and stability on uneven or rough roads
• Reduces body roll and enhances cornering response
• Allows customization of suspension feel for different driving styles
• Addresses fading or inconsistent damping in worn shocks
• Enhances load carrying capability by maintaining suspension control

Installation Notes and Tips

When installing the Bilstein 25-305258 shock absorber, ensure compatibility with your vehicle’s suspension mounting points, specifically eye mounts with 14.1mm diameter. Proper torque specifications should be followed to avoid damage to the mounts. Since this shock features adjustable damping, it is recommended to start with manufacturer-recommended settings and adjust incrementally to achieve desired ride characteristics. The absence of a protective boot means care should be taken to avoid debris contact during installation and use.

Quality Assurance and Warranty

Bilstein shock absorbers are manufactured to meet strict quality standards, utilizing durable materials and advanced engineering. The zinc plated finish provides corrosion resistance to extend product life. While specific warranty details for part number 25-305258 should be confirmed with the supplier or manufacturer, Bilstein typically offers coverage against defects in materials and workmanship.