Bilstein 25-305265 Suspension Shock Absorber - Rear Right

Bilstein B8 8100 (Bypass) Shock Absorber Overview

The Bilstein B8 8100 (Bypass) shock absorber, part number 25-305265, is engineered for drivers seeking precise suspension control and durability. Designed with a monotube internal structure and bypass body, this shock absorber offers adjustable damping for both compression and rebound.

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

About the B8 8100 (Bypass) Product Line

The B8 8100 (Bypass) series from Bilstein is designed to provide enhanced suspension tuning through its unique bypass body design. Unlike coilover shocks, this non-coilover setup allows for precise adjustment of both compression and rebound damping independently. This makes it suitable for vehicles requiring fine-tuned suspension performance, especially in off-road or performance driving scenarios.

Detailed Product Description

The Bilstein 25-305265 shock absorber features a monotube internal design that ensures consistent damping and heat dissipation during demanding driving conditions. The bypass body allows fluid to flow through external bypass tubes, enabling double adjustable damping settings for compression and rebound. This adjustability helps tailor the suspension response to specific driving needs or terrain. The shock’s zinc plated finish offers protection against corrosion, extending service life. Both upper and lower mounts use 14.1mm eyelets, providing secure attachment points compatible with various vehicle suspensions. The included remote reservoir improves fluid capacity and cooling, reducing fade during extended use.

Applications and Problem Solving

• Improves vehicle handling and stability on rough or uneven terrain
• Reduces suspension fade during prolonged off-road or performance driving
• Allows fine-tuning of ride comfort and control through adjustable damping
• Replaces worn or damaged factory shocks for restored suspension performance
• Enhances suspension response for trucks and SUVs requiring robust shock absorbers

Installation Notes and Tips

Ensure compatibility with your vehicle’s suspension system by verifying eyelet mount sizes and shock length requirements. The 14.1mm eyelet mounts on both ends require appropriate mounting hardware. Adjust damping settings incrementally to find the optimal balance between comfort and control. Professional installation is recommended to maintain suspension geometry and safety.

Quality Assurance

Bilstein shock absorbers are manufactured to strict quality standards, featuring durable materials and precision engineering. The zinc plated finish protects against corrosion, and the monotube design supports consistent performance. Warranty information should be confirmed with the manufacturer or authorized distributor.