Bilstein 25-320442 Suspension Shock Absorber - Rear Left

Bilstein B8 8100 (Bypass) Shock Absorber Overview

The Bilstein B8 8100 (Bypass) shock absorber, part number 25-320442, is engineered for Toyota Tacoma owners seeking precise suspension control. Designed with adjustable damping and a bypass body, this shock absorber enhances ride quality and handling for light trucks.

• Double adjustable compression and rebound with click adjuster knob
• Bypass body design (non-coilover)
• Monotube internal design for consistent performance
• Includes external reservoir for improved heat dissipation
• Collapsed length: 14.25 inches (362 mm), extended length: 23.94 inches (608 mm)
• 60mm piston diameter and 18mm shaft diameter
• Eye 12mm lower mount and stem upper mount
• Evo grey finish for durability and corrosion resistance

About the B8 8100 (Bypass) Product Line

The B8 8100 (Bypass) series from Bilstein is designed specifically for light trucks like the Toyota Tacoma, offering advanced suspension technology with bypass body construction. This design allows for independent adjustment of compression and rebound damping, providing drivers with the ability to fine-tune their suspension setup for varying terrain and driving conditions. The external reservoir improves fluid capacity and heat management, ensuring consistent shock performance during extended use.

Detailed Product Description

The Bilstein 25-320442 shock absorber features a monotube internal design that delivers reliable and consistent damping response. Its bypass body allows for double adjustable damping, enabling precise control over both compression and rebound settings via a click adjuster knob. This adjustability is ideal for Toyota Tacoma drivers who require tailored suspension performance for off-road or on-road applications. The shock’s external reservoir enhances heat dissipation, reducing fade during demanding driving conditions. With a collapsed length of 14.25 inches and an extended length of 23.94 inches, this shock absorber fits the suspension geometry of the Tacoma accurately. The 60mm piston and 18mm shaft diameters contribute to robust construction and durability, while the eye 12mm lower mount and stem upper mount ensure secure attachment to the vehicle.

Common Applications and Problem Solving

• Improves handling and stability on uneven or rough terrain
• Reduces suspension fade during extended off-road use
• Allows customization of ride comfort and control through adjustable damping
• Replaces worn or damaged factory shocks for restored suspension performance
• Enhances load carrying capability and vehicle control under heavy payloads

Installation Notes and Tips

Installation of the Bilstein 25-320442 shock absorber requires standard suspension tools and mechanical knowledge. Ensure the vehicle is securely lifted and supported before removing old shocks. Adjust the compression and rebound settings after installation to match your driving preferences and conditions. No boot or spring seat is included, so verify compatibility with your existing suspension components. Check mounting points for wear or damage during installation.

Quality Assurance and Warranty

Bilstein shock absorbers are manufactured to meet strict quality standards, ensuring durability and consistent performance. The B8 8100 (Bypass) shock absorber undergoes rigorous testing to comply with OEM specifications for the Toyota Tacoma. Warranty information is available through Bilstein and typically covers defects in materials and workmanship under normal use conditions.